Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

Fuel pump/injectors?

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Old Aug 17, 2007 | 05:51 PM
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Fuel pump/injectors?

Looking to put in a 255lph Walbro pump and 370cc injectors for my turbo project. Curious to see what you guys are running on your 4th gens. Should i go with an inline pump or a submersed pump? As for injectors should i just add 2-3 370's or switch all my injectors to 370's? I'll be running E-manage ultimate, on this setup if it makes any difference.
Old Aug 17, 2007 | 06:03 PM
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I don't have a turbo but I'm boosted so I guess I can put my .02 in. I am using a Walbro in tank 255lph fuel pump and love it! I've heard some bad things about in line fuel pumps. The in tank pump is also super easy to install. As for the injectors I would swap them all out for 370ccs. How much boost are you looking to run?

Check the fuel setup thread...
http://forums.maxima.org/showthread.php?t=391200
Old Aug 17, 2007 | 06:09 PM
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All 6 injectors should be switched over to 370's.
A Walbro 255lph intank pump is the choice here.
Check the huge Emanage thread as well.
Old Aug 17, 2007 | 07:53 PM
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Well im only boosting a little, not racing this thing, just making it a little more frisky. A small T3 probably, i'll settle for 275-300rwhp. Im not sure exactly what turbo but i want something with fast spool up, i want maximum boost by 3500rpms.

As for doing all 6 injectors, is it best from a junkyard, cuz i looked and new ones are big money.
Old Aug 18, 2007 | 04:31 AM
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Originally Posted by 97maximaman
Well im only boosting a little, not racing this thing, just making it a little more frisky. A small T3 probably, i'll settle for 275-300rwhp. Im not sure exactly what turbo but i want something with fast spool up, i want maximum boost by 3500rpms.

As for doing all 6 injectors, is it best from a junkyard, cuz i looked and new ones are big money.
not too shabby.... if i do say so myself
Old Aug 18, 2007 | 05:27 AM
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Originally Posted by 97maximaman
Well im only boosting a little, not racing this thing, just making it a little more frisky. A small T3 probably, i'll settle for 275-300fwhp. Im not sure exactly what turbo but i want something with fast spool up, i want maximum boost by 3500rpms.

As for doing all 6 injectors, is it best from a junkyard, cuz i looked and new ones are big money.
Fixed that for ya buddy.

But you can get the injectors from a junk yard and rebuild them or wait until someone on here sells theirs.
Old Aug 18, 2007 | 09:48 AM
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Lol, rwhp??? What the hell was i thinking. How harf of a rebuild is it?
Old Aug 18, 2007 | 10:00 AM
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you can't do it yourself, you'd need to have a place that services injectors do it.
Old Aug 18, 2007 | 02:11 PM
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Why don't you guys save this guy some heart ache and give it to him raw.

Dude, if you think you can swap half of your injectors then you HAVE NO CLUE what is going on and should not even be attempting this.

I can tell you now, a turbo project (one that works) is going to cost you a whole lot more than you think. You either need to go read all you can for a couple months or just take the car to a shop and have them worry about the details.
Old Aug 18, 2007 | 02:22 PM
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its not about not knowing what im talking about. I've seen setups where only two 370cc injectors were added to richen up the mixture. I had already planned on doing all 6. As for reading up on turbos for a few months, what do you think im doing? If you dont plan to help someone out, stay off the post.
Old Aug 19, 2007 | 06:05 AM
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I am helping out by saving you money, time and a motor.

How could YOU POSSIBLY add 2 larger injectors???? out of 6!?????

THE ONLY WAY that would work is if those injectors were placed right after the throttle body or some other central location so it could distribute to the other cylinders.

Richen up the mixture for 2 out of the 6 cylinders. So I guess you don't mind when the other 4 melt down???
Old Aug 19, 2007 | 06:13 AM
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Originally Posted by DonSupreme
I am helping out by saving you money, time and a motor.

How could YOU POSSIBLY add 2 larger injectors???? out of 6!?????

THE ONLY WAY that would work is if those injectors were placed right after the throttle body or some other central location so it could distribute to the other cylinders.

Richen up the mixture for 2 out of the 6 cylinders. So I guess you don't mind when the other 4 melt down???
You're an idiot. Have you never heard of anyone adding additional injectors to supply more fuel under boost? Yes, it works exactly as you imply is so unbelievable in your post. They're placed in the IM somewhere that will distribute to all cylinders (relatively) equally.
Old Aug 19, 2007 | 09:45 AM
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Calm down peeps, he's just going off what he read, they show those in boost magazines every now and then, plus stillen s/c kit was that way wasn't it? Replace all 6 and make sure you have some fuel management ready to operate when you make the swap like safc/vafc or emanage. Send your upgraded injectors to Deatschwerks.com for cleaning and flow testing. Try to get the book Maximum Boost by Corky Bell and read all the stickies in this forum. We might need a "'I'm a boost newbie post your questions here thread" like in the 4th gen forum. j/k...maybe...
Old Aug 19, 2007 | 01:55 PM
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Thank you pmohr for clarifying this. Thats what i was refering to the whole time. With that said, which is less expensive for the size turbo im using? Or atleast, which is safer. Im really on a budget, maybe 2k at most to do a whole turbo setup not including gauges and management, that will be covered by my parents(dont ask why).
Old Aug 19, 2007 | 02:16 PM
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safer would definitely be getting all six. throttle body injection into a dry manifold design is not the best idea.

you need to think long and hard about how willing you are going to be when it comes to spending extra money on this because the reality is that you're going to set a budget, and you're then going to quickly find yourself spending money on unforseen things.
Old Aug 19, 2007 | 05:38 PM
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Originally Posted by pmohr
You're an idiot. Have you never heard of anyone adding additional injectors to supply more fuel under boost? Yes, it works exactly as you imply is so unbelievable in your post. They're placed in the IM somewhere that will distribute to all cylinders (relatively) equally.
Hmmmm Ok MR. ASE Certified.
Old Aug 19, 2007 | 05:42 PM
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Originally Posted by DonSupreme
Hmmmm Ok MR. ASE Certified.
Yes, I am. You were attempting to insinuate...what?
Old Aug 19, 2007 | 11:55 PM
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Ahh, in a perfect world all orgers would get along, but this isn't perfect. In the end I'm going all 6 injectors and a 255lph walbro, emanage blue for control. The turbo I've settled on is a T3 .60, external wastegate i'm aiming for 7-8psi. All rear-mount, taking it off the back end off the wsp y-pipe, then cat, then straight pipes after that.
Only thing so far left to question is the z32 MAF, i was on homemadeturbo.com, and i get mixed answers. Some people say the maf needs to be placed between the filter and the turbo, others say keep it in the stock position right before the TB. I thought when your charged you cant put it before the TB, anyone clear this up?
Once i get that figured out, I'm off to parts. Should take a month to get all parts in, but I'm in no rush.
Old Aug 20, 2007 | 12:00 AM
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you can put the MAF either before or after the turbo - people do it both ways with good results.
Old Aug 20, 2007 | 10:49 AM
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What size injectors do you run Nealoc?

I run 660cc (rated @ 3bar), but I run them @ 4 bar = over 700cc+

I may need more soon.
Old Aug 20, 2007 | 11:12 AM
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I'll be running deatschwerks in the 600-650cc range when I get my new setup going. Are you talking about the injectors you run (and may end up running) on your A4?
Old Aug 20, 2007 | 11:37 AM
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Im really on a budget, maybe 2k at most to do a whole turbo setup not including gauges and management, that will be covered by my parents(dont ask why).
There is almost no way to turbo a maxima for that price without welding everything yourself and using nothing but cheap, used parts. It could be done, but it would not be a quality kit. You could maybe do a SC kit for somewhere around there, and it is a bolt on affair.
Old Aug 20, 2007 | 08:16 PM
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I doubt i could find the s/c for that price let alone install it for that much. A turbo can be done for under 2k, just ask streetzlegend, he did his RMT for 1600. And yes im welding myself.
Old Aug 20, 2007 | 09:08 PM
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Originally Posted by 97maximaman
I doubt i could find the s/c for that price let alone install it for that much. A turbo can be done for under 2k, just ask streetzlegend, he did his RMT for 1600. And yes im welding myself.
FYI, he did it for 1600 because the injectors and turbo were donated for the project by me, LOL (well, the injectors were donated, the turbo I lent it to him until he upgrades it to a big boi GT turbo- im not in a hurry to use it, it was just gonna sit here so he might as well put it to some use, lol).

I got the turbo for $300, and the injectors I got them off of Matty for ~$270.

Plus for that price we had alot of hookups and a few people that owed us favors, lol. I can easily see a RMT project being in the 2000-2500 range if done properly. Still cheaper than most. But if you can shop around, and you're well connected, then you MIGHT get it under $2k, but not by much.
Old Aug 21, 2007 | 12:02 AM
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Originally Posted by 95BLKMAX
FYI, he did it for 1600 because the injectors and turbo were donated for the project by me, LOL (well, the injectors were donated, the turbo I lent it to him until he upgrades it to a big boi GT turbo- im not in a hurry to use it, it was just gonna sit here so he might as well put it to some use, lol).

I got the turbo for $300, and the injectors I got them off of Matty for ~$270.

Plus for that price we had alot of hookups and a few people that owed us favors, lol. I can easily see a RMT project being in the 2000-2500 range if done properly. Still cheaper than most. But if you can shop around, and you're well connected, then you MIGHT get it under $2k, but not by much.
Hmm, i hate when people do this, lol. In all honesty, should i look for a s/c kit? Turbos are easier to install right? I mean i understand them better, and they could provide better results/easier adjustment. Damn, i wouldn't even know where to start looking for the s/c, there so hard to find now that stillen had to stop making them. Just like the CE sts, looked at for 2 years, finally save up to buy it and its gone. I looked at the stillen s/c for a year, saved up to boost, and they were gone so i moved on to a turbo idea. I saw someone on here makes the bracket, if its reasonably priced i might consider it.
Old Aug 21, 2007 | 08:36 AM
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I'd say the s/c install would be easier than a turbo install. Look at all that plumbing work you have to do for the turbo intake/exhaust.
Old Aug 21, 2007 | 07:58 PM
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Maybe so but i did some looking last night and it cant be done for under 3k let alone 2k, and thats just for the setup, no management. Matty sell the bracket for 1200 then a blower(used) would be 800-1000, then the tubing and oil setup and all the other fun stuff adds up to roughly 2500-3000 after all is said and done.

On the turbo side i not only understand them better, but i've got some hookups(oil pump was a freebie, as well as BOV and couple feet of 2" charge piping), and i'll be able to weld the plumbing. Its just a matter of welding a t3 flange onto the WSP b-pipe, hanging the turbo, and plumbing the charge pipe up the body. Before any of thats started i'll already have emanage in and 370cc injector/255lph walbro. Install will probably take longer and might even cost similar, but with a turbo im getting exactly what i want and need, more easily adjustable boost, so after doing some reading last night im still set on this setup.
Old Aug 22, 2007 | 05:54 AM
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Originally Posted by Nealoc187
I'll be running deatschwerks in the 600-650cc range when I get my new setup going. Are you talking about the injectors you run (and may end up running) on your A4?
I currently run that setup.

^97MAX, One of the things I was trying to tell you is that your budget is too low.
Old Aug 22, 2007 | 09:52 AM
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Originally Posted by DonSupreme
^97MAX, One of the things I was trying to tell you is that your budget is too low.
I understand, just from looking around and doing some math i can see it'll be more money. W/e I'll just have to save up a little longer....or order things as i get the money.
Old Aug 22, 2007 | 11:21 AM
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I've been piecing together for a few years now to be honest. Only thing about that is better stuff comes out and works out.
Old Aug 22, 2007 | 04:15 PM
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Thats alittle insane, a few years to turbo. By the time you get turboed the car will be on its last leg. Im thinking i'll save 500 a month cash, in an envelope, and in 4-5 months just purchase everything. Within a month of now i'll have the pump and injectors and emanage in so i just need to save for the actual turbo parts. In the mean time i have some reading up to do because im still confused on how to hookup a BOV, wastegate(external), and boost controller. Lol, i see lots of little hoses, not a clue where they hookup. I'll keep you guys updated on my progress with pics, maybe even a writeup since no one here has done one.
Old Sep 2, 2007 | 09:27 PM
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These people sale the "secondary" injectors that you all are speaking off with a management unit for it.. A buddy of mine has a turbo max with stock injectors but is running 2- 1100cc(i believe) secondary injectors with a MT-2(microtech) to control them.
http://www.turbospecialties-race.com.../2Injector.asp
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