5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

upgrading injectors

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Old 09-12-2015, 06:39 PM
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upgrading injectors

Hey guys i plan on upgrade to a 4 inch intake in the near future from a guy on the forums that makes them but i hear i have to upgrade my injectors for this some people say you can run the stock injectors but its a 50/50 shot I don't wanna the chance especially with 164k on the odometer i hear you can use wrx injectors i dont know what year though I wanna find the cheapest price possible dont wanna spend 500 dollars for 440cc injectors :/
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Old 09-12-2015, 07:58 PM
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I'll say get used to the search bar and find out what you are trying to do first,because a 4" intake on a stock car doesn't really fall into a supporting mod category

I'll suggest reading the sticky's on the "all motor" sec or the tc/sc sec if you wanna make your car go faster
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Old 09-12-2015, 08:01 PM
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The car is not stock sorry forgot to mention mods it has obx headers and obx 2.5 exhaust magnaflow high flow cat nwp bop and cxj intake spacers and stillen intake
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Old 09-12-2015, 08:31 PM
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Oooh ! Than just get some 560cc Bosch pnp for $270 shipped and buy a wb with data logging capabilities with the rest of the $500
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Old 09-12-2015, 11:52 PM
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If you want my opinion? Save the injector money. Unless you plan on going fi in the future, you don't need injectors for a 4 inch intake. There's guys that have/are running stock injectors on boost. So you don't need injectors and the hassle that comes with them for an intake. What you would want depending on your future plans/generation car you have is wideband/tunning instrument. If you're a 5gen and are not interested in fi perhaps safc and lc1. If you see fi in your future emanage ultimate/wideband. If you're a 5.5gen no matter fi or not utec and txs tuner. I say this because there are plenty of utecs out there for 150 or less and plenty of txs widebands in the same ballpark. So given the price you may as well skip the safc route and have way more control for the same or less money. You would also be set if you change your mind on fi. Just one mans opinion.
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Old 09-13-2015, 06:02 AM
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Stock fuel system it is! And yes i have a 5.5 gen
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Old 09-13-2015, 06:45 AM
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You're going to need 440s at least.
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Old 09-13-2015, 10:03 AM
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I don't see why you would need injectors for bolt on mods. I think you'll find that headers, intake and exhaust will result in the car actually running rich at full throttle and needing to be leaned out. Fuel starvation is not an issue.
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Old 09-13-2015, 12:13 PM
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Ok what if i go with a 3.5 inch...
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Old 09-13-2015, 12:40 PM
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Originally Posted by Maxboy23
Ok what if i go with a 3.5 inch...
You would still not need injectors.
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Old 09-13-2015, 01:20 PM
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Haha I like this guy alright I'll take your word for it^
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Old 09-13-2015, 03:36 PM
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Originally Posted by Maxboy23
Haha I like this guy alright I'll take your word for it^
Just save your money with the "bolt ons" and turbo it. I see guys spend a whole lot of money on these parts to gain 3hp here 10hp there. That's fine but the cost for some of these bolt ons vs the minimal gain in hp is ridiculous imo. By the time you ad up the cost of these trinkets you could have or at least be very close to a turbo'd car making real power and very fun to drive. It just seems a little silly to me to spend big money on something you MAY get 8hp out of (not saying any one bolt on in particular). I would be willing to bet you wouldn't notice an 8 hp increase or decrease in the car if you didn't pay for it. So I say turbo nitrous or supercharge it or save the cash. Just my 2 cents.
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Old 09-14-2015, 04:42 AM
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upgrading injectors

Clearly this guy Matt dont know crap about these cars.go ahead put the 4" intake on with out injectors and a tune and see what happens.even the 3.5" intake with your mods are going to need upgraded injectors and a tuning device ask matt at what % duty cycle the stock injectors are running to compensate for the increase in airflow ask matt what his afr is and what its running at then ask matt if you follow his directions if he's going to replace your engine when you kill it listening to him.as far as gains with full boltons people have reached 305hp this is well documented and dyno proven.stop listening to noobs like Matt and refer back to the product manufacturer on how to get the best results from it.

Have a good day
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Old 09-14-2015, 04:43 AM
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upgrading injectors

Btw going turbo isnt even close to bolt on money be prepared to spend $2k to $4k to go that route.
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Old 09-14-2015, 10:01 AM
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Originally Posted by The_Fixer
Clearly this guy Matt dont know crap about these cars.go ahead put the 4" intake on with out injectors and a tune and see what happens.even the 3.5" intake with your mods are going to need upgraded injectors and a tuning device ask matt at what % duty cycle the stock injectors are running to compensate for the increase in airflow ask matt what his afr is and what its running at then ask matt if you follow his directions if he's going to replace your engine when you kill it listening to him.as far as gains with full boltons people have reached 305hp this is well documented and dyno proven.stop listening to noobs like Matt and refer back to the product manufacturer on how to get the best results from it.

Have a good day
I agree with most of what you're saying but not the part about the injectors.

I've been running a similar setup for the last 10 years with no problems. Hotshot headers, full exhaust, intake and an AFR controller. I have had the car dyno tuned and I do know what's going on with it.

When I had it tuned they actually had to lean the AFR because it was running very rich at full throttle. In other words, the injectors were pumping too much fuel. There were a lot more people modding these cars back then and they all had the same results. Intake and exhaust mods trick the computer into running rich and an AFR tune leans it out to create more power. Fuel starvation isn't an issue.
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Old 09-14-2015, 11:11 AM
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Originally Posted by The_Fixer
Btw going turbo isnt even close to bolt on money be prepared to spend $2k to $4k to go that route.
Ad up a car with full bolt ons and see how much you've spent with brand new parts tell me what you come up with? How much were cattman headers and 3 inch exhaust alone. In the neighborhood of $2000 right? Nwp throttle block off plate spacers $600 - 700. The list goes on and on. We're close to $3000 and I'm just getting started.
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Old 09-14-2015, 11:16 AM
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Originally Posted by The_Fixer
Clearly this guy Matt dont know crap about these cars.go ahead put the 4" intake on with out injectors and a tune and see what happens.even the 3.5" intake with your mods are going to need upgraded injectors and a tuning device ask matt at what % duty cycle the stock injectors are running to compensate for the increase in airflow ask matt what his afr is and what its running at then ask matt if you follow his directions if he's going to replace your engine when you kill it listening to him.as far as gains with full boltons people have reached 305hp this is well documented and dyno proven.stop listening to noobs like Matt and refer back to the product manufacturer on how to get the best results from it. Have a good day
Don't listen to the noob who's car is turbo'd and did everything himself. That guy doesn't know anything. 😀
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Old 09-14-2015, 02:24 PM
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upgrading injectors

Dont know where your prices are coming from but...
Cattman Gen 2 headers $600
Cattman 2.5/3" exhaust $550
Nwp spacers $200
Nwp blockoff $65
Nwp TB $300
CGR SSIM $200
CGR intake $130
ID injectors $250
Haltech $900
Harness $300
Quad wb's $225
TURBO SETUP
All the above Plus
Custom Headers and Downpipe $1800
Intercooler $350
Garrett Turbo $2500
Cold piping $600
Pan spacer and feed lines $400
Turbo timer $125 used


Shall i go on? Aint nothing New about me up in this place
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Old 09-14-2015, 04:06 PM
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What size are the stock injectors? Just curious
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Old 09-14-2015, 04:57 PM
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over 9000
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Old 09-14-2015, 05:36 PM
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Originally Posted by The_Fixer
Dont know where your prices are coming from but... Cattman Gen 2 headers $600 Cattman 2.5/3" exhaust $550 Nwp spacers $200 Nwp blockoff $65 Nwp TB $300 CGR SSIM $200 CGR intake $130 ID injectors $250 Haltech $900 Harness $300 Quad wb's $225 TURBO SETUP All the above Plus Custom Headers and Downpipe $1800 Intercooler $350 Garrett Turbo $2500 Cold piping $600 Pan spacer and feed lines $400 Turbo timer $125 used Shall i go on? Aint nothing New about me up in this place
You don't need cattman headers for a turbo. Or the exhaust because you put 21/2 inch you wouldn't want that more like 3". Don't need any nwp products for turbo so minus that. Don't need ssim. Don't need haltech or wbs ( I assume that's walboro). Don't need custom anything let alone headers and down pipe. I don't know what turbo you're paying $2500 for are you kidding me?? Inter cooler is not $350. Cold piping $600 man you don't know s""it but I'm the noob. $400 for spacer and lines dude what planet are you on. Almost everything you have there is either way overpriced and unnecessary. You don't need to have every bolt on nick nack to have a turbo system. That was my whole point. Skip the waste of money to power ratio stuff and go straight for a turbo system if you're looking for power. If you want real and of this planet prices I can provide.
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Old 09-14-2015, 05:39 PM
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Originally Posted by Maxboy23
What size are the stock injectors? Just curious
315cc at 3.5 bar.
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Old 09-14-2015, 05:42 PM
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upgrading injectors

You fail to understand! Under turbo it says headers and custom down and sorry bruh i dont use that home depot dryer duct and crap you used all my tubing is Stainless and tig welded not that craptacular turbo setup you got going on over there and yes everything on all my cars is Quality Made Products
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Old 09-14-2015, 05:44 PM
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Originally Posted by The_Fixer
Dont know where your prices are coming from but... Cattman Gen 2 headers $600 Cattman 2.5/3" exhaust $550 Nwp spacers $200 Nwp blockoff $65 Nwp TB $300 CGR SSIM $200 CGR intake $130 ID injectors $250 Haltech $900 Harness $300 Quad wb's $225 TURBO SETUP All the above Plus Custom Headers and Downpipe $1800 Intercooler $350 Garrett Turbo $2500 Cold piping $600 Pan spacer and feed lines $400 Turbo timer $125 used Shall i go on? Aint nothing New about me up in this place
When was cattman selling new headers for $600 or a catback for $550??? You'd be hard pressed to find used stuff that low. Funny how you put super low used prices on bolt ons. Then you put new part prices or at least what you think are new part prices on turbo stuff. Your lack of knowledge is almost funny. I won't resort to calling you what you called me but I think everyone can see.
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Old 09-14-2015, 05:45 PM
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upgrading injectors

Just because you buy cheap crap dont mean everyone has too

http://m.mishimoto.com/mishimoto-uni...er-s-line.html
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Old 09-14-2015, 05:48 PM
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Originally Posted by The_Fixer
You fail to understand! Under turbo it says headers and custom down and sorry bruh i dont use that home depot dryer duct and crap you used all my tubing is Stainless and tig welded not that craptacular turbo setup you got going on over there and yes everything on all my cars is Quality Made Products
I'll tell you what I'll take pictures of my entire turbo setup you take some of. ........... Ohh you don't have one. Still amazed your gonna spend 2500 on a turbo. I got some real nice real estate in southern Florida for sale. How bout a bridge in NYC.
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Old 09-14-2015, 05:50 PM
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upgrading injectors

First off i bought my first set of cattman headers back in 2005 Gen 1 yeah that was the price back then same with the 2.5 catback
Also nothing in my cars are used or second hand. As OG members like Chris Gregg,NmexMax and many others around here know
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Old 09-14-2015, 05:53 PM
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Originally Posted by The_Fixer
Just because you buy cheap crap dont mean everyone has too http://m.mishimoto.com/mishimoto-uni...er-s-line.html
What's wrong with that inter cooler?? Do you have one. Don't give me a link. Tell me about YOUR personal experience with it. You can't because you don't have any. I can give links on everything made aftermarket for our cars about someone saying it sucks. So a link means squat. Tell me about what you know. You couldn't even answer mailboys question about the size of injectors.
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Old 09-14-2015, 05:54 PM
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upgrading injectors

Show me one product i am not dead on with prices
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Old 09-14-2015, 05:57 PM
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upgrading injectors

Dont let the join date of this profile fool you i been here since 1997.and what question was asked about injectors? And trust me i even k ow personally the person you been buying parts from and i know all your info is coming from him
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Old 09-14-2015, 05:57 PM
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Originally Posted by The_Fixer
First off i bought my first set of cattman headers back in 2005 Gen 1 yeah that was the price back then same with the 2.5 catback Also nothing in my cars are used or second hand. As OG members like Chris Gregg,NmexMax and many others around here know
Yea nothing is used on your car big deal. So your the sucker that pays an ungodly amount of money for a throttle body kit to gain 8hp. Your right though I do but used stuff and I also look for the best deals to. You know why cause I'm smart. I work hard for my money and I'm not going to give it up for 8hp.
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Old 09-14-2015, 05:58 PM
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Originally Posted by The_Fixer
Show me one product i am not dead on with prices
Garrett turbo 2500. There's one I can give more.
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Old 09-14-2015, 05:59 PM
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Originally Posted by The_Fixer
Dont let the join date of this profile fool you i been here since 1997.and what question was asked about injectors? And trust me i even k ow personally the person you been buying parts from and i know all your info is coming from him
Everything under the turbo part of your list.
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Old 09-14-2015, 06:03 PM
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Originally Posted by The_Fixer
Just because you buy cheap crap dont mean everyone has too http://m.mishimoto.com/mishimoto-uni...er-s-line.html
It's funny you linked the exact intercooler company that I have on my car but you I buy cheap crap?? Mishimoto is the inter cooler I just put on.
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Old 09-14-2015, 06:12 PM
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Originally Posted by The_Fixer
Dont let the join date of this profile fool you i been here since 1997.and what question was asked about injectors? And trust me i even k ow personally the person you been buying parts from and i know all your info is coming from him
What person have I bought my stuff from and what "info" are you talking about please share?? Because all my parts have been bought from all different places from here very little to eBay to lowes and everywhere in between but I'd love to know what you're trying to say here?
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Old 09-14-2015, 06:31 PM
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Old 09-14-2015, 06:33 PM
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upgrading injectors

Btw wtf is a Throttle Block off plate from NWP aaron makes no such part
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Old 09-14-2015, 06:36 PM
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upgrading injectors

Nestor guess you been following on FB
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Old 09-14-2015, 06:42 PM
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Mehhhh no fb for me bruh
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Old 09-14-2015, 06:48 PM
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Originally Posted by The_Fixer
Btw wtf is a Throttle Block off plate from NWP aaron makes no such part
That's all you got?? Yawn.
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