How Does 1999 Emission vs 1995 Emissions affect Performance

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12-31-2005, 10:56 AM

SpeedCrazie

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How Does 1999 Emission vs 1995 Emissions affect Performance

Basically I have a 1995 Engine that is going to be built (Rods,Pistons,Head Work, Etc.) but need another maxima to swap it into. I have a lead on a 1999 Maxima but as I understand it, the emissions differ from my previous 95 and resemmble more of the early 5th Gens 2000-2001,

I was thinking of elminating the Emissions Items anyway, so is there really any reason why the 1999 wouldn't be a prime canidate for my new engine? Or would I be better sticking with a 1995-1997 Model?

Thanks!

JP

12-31-2005, 12:12 PM

JSutter

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stick it in a fed spec 95 and enjoy every benifit only avail. with that car. less weight, almost no emmisions, and a cheap price.

99's have precats, electric egr, silly ecu, swirl vavles, and would cost more, all while being heavy.

12-31-2005, 12:31 PM

s0ber

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well said.. :-x

12-31-2005, 12:33 PM

NmexMAX

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Why did a 99 break 200 fwhp, N/A, w/o an ECU?

12-31-2005, 12:51 PM

tavarish

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Quote:

Originally Posted by NmexMAX

Why did a 99 break 200 fwhp, N/A, w/o an ECU?

factory freak.

12-31-2005, 01:06 PM

NmexMAX

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I don't believe in modern day factory freaks.

Tolerances are kept pretty tight in the industry today, as well as 7 years ago.

There's not enough information/data that supports 99 engines being 'weak' .

12-31-2005, 06:17 PM

nismology

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Quote:

Originally Posted by NmexMAX

Why did a 99 break 200 fwhp, N/A, w/o an ECU?

Anomaly. He gained no HP by adding a JWT ECU. That fact right there is the red flag to me. I'd bet my life that the 200 WHP (sans JWT ECU) dyno was inflated. There haven't been ANY other dynos on this site or otherwise that suggest it's possible to even approach 200 WHP w/out an upgraded ECU on an internally stock 3.0 with a MEVI.

12-31-2005, 06:18 PM

nismology

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Quote:

Originally Posted by NmexMAX

Yea. If you remove the front pre-cat via either a fed-spec exhaust manifold or headers they're just as "mod-able" as any other VQ.

12-31-2005, 06:24 PM

JClaw

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Always go for a 95 if you have the choice. Best model year for maximas IMO.

01-01-2006, 03:04 AM

#10

NmexMAX

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Quote:

Originally Posted by nismology

Anomaly. He gained no HP by adding a JWT ECU. That fact right there is the red flag to me

I just cancelled myself out....if that's possible

... But I will

you nismology, until there are more 99's that dyno

01-01-2006, 05:08 AM

#11

JSutter

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well since this guy wants to slap in a built vq into the 99 chassis hes going to have a crap load of 99 emmissions crap to deal with. may as well save time and work with using a different year.

01-01-2006, 10:12 AM

#12

Zack342

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Quote:

Originally Posted by nismology

MY TUNE FROM JWT WAS VERY LEAN. I SENT BACK THE ECU AND THEY SENT ME A NEW PROGRAM. I WILL REDYNO LATER THIS MONTH.

01-01-2006, 10:16 AM

#13

s0ber

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Quote:

Originally Posted by zack342

MY TUNE FROM JWT WAS VERY LEAN. I SENT BACK THE ECU AND THEY SENT ME A NEW PROGRAM. I WILL REDYNO LATER THIS MONTH.

Dont scream

01-01-2006, 10:52 AM

#14

nismology

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Quote:

Originally Posted by zack342

MY TUNE FROM JWT WAS VERY LEAN. I SENT BACK THE ECU AND THEY SENT ME A NEW PROGRAM. I WILL REDYNO LATER THIS MONTH.

It still doesn't explain how your MEVI/stock ECU dyno is the highest that we've ever seen. By a pretty wide margin at that.

01-01-2006, 11:35 AM

#15

vipervadim

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Quote:

Originally Posted by JSutter

how is the 99 ECU silly?

NATS/NVIS?

99 is a fresher enine than 95.

just do a 98 fed-spec engine and you are good, make sure to change the clutch when engine is out.

why not do a 3.5L instead of the 3.0?

HAPPY NEW YEAR EVERYBODY!!!!

01-01-2006, 11:53 AM

#16

s0ber

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The 99 owners are offended.

01-01-2006, 12:53 PM

#17

SpeedCrazie

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Just out of curiousity what emissions controls would I have to worry about if I did get the 1999 model. As I mentioned I would like to eliminate the Emissions parts, however would doing so cause any more headaches vs doing so with a 1995? Drivability Issuses, Etc...?

Thanks for all the help guys!

JP

01-01-2006, 02:26 PM

#18

Zack342

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Quote:

Originally Posted by nismology

It still doesn't explain how your MEVI/stock ECU dyno is the highest that we've ever seen. By a pretty wide margin at that.

Paypal me a $100 and chose any of the massachusetts memebers you trust and i will go dyno and they can be present.

01-01-2006, 02:51 PM

#19

nismology

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Quote:

Originally Posted by zack342

Paypal me a $100 and chose any of the massachusetts memebers you trust and i will go dyno and they can be present.

If you're going to the same dyno there's a chance that the numbers will be inflated again.

01-01-2006, 03:07 PM

#20

98SEBlackMax

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Quote:

Originally Posted by nismology

That dyno is not over-rated, that dyno is more of a heart breaker if anything. I have dozens of dyno pulls from that shop over the years. For every dyno test my car was on par for every mod that I did. No factory freaks here.

and technically my '96 did 201 WHP with a stock ECU and variable intake manifold.

Back to the subject on hand I would go with a '95 Maxima for it's limited emissons equipment and lightest weight. I had to go with a '96 for stupid Massachusetts OBD-2 emissons reasons, but I plan on going with a 95 ECU so I can use the '95 emissons stuff without any CELs.

01-01-2006, 05:17 PM

#21

nismology

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Quote:

Originally Posted by 98SEBlackMax

No other internally stock 3.0 with MEVI and stock ECU has gotten close to 200 WHP. That's the point.

01-01-2006, 05:23 PM

#22

Zack342

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Quote:

Originally Posted by nismology

No other internally stock 3.0 with MEVI and stock ECU has gotten close to 200 WHP. That's the point.

My car did and i have the dyno to prove

01-01-2006, 05:42 PM

#23

nismology

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Quote:

Originally Posted by zack342

My car did and i have the dyno to prove

Dyno numbers can be inflated depending on what barometric pressure the dyno operator enters and also the location of the ambient temperature sensor. I'm going by the average of all the dyno's i've seen the 2+ years i've been on this site. Your motor isn't magically stronger than any other VQ30DE that ever was.

01-01-2006, 05:47 PM

#24

98SEBlackMax

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Quote:

Originally Posted by nismology

No other internally stock 3.0 with MEVI and stock ECU has gotten close to 200 WHP. That's the point.

My point is that my car has dynoed similar #s mod for mod on this dyno in comparison to other 4th gens on the org. Why would it read different for Zack's car? Only if it was strapped in weird or something, it would make a difference. If Zack re dynos at 200 WHP the #s would be for certain.

And if it was reading high I would think my '96 which has alot more done to it than Zack's would read higher than 201 WHP. Also to my knowledge no one else has the same combo of modifactions as Zack's '99. So it would be almost damn impossible to repeat the results anywhere else...

01-01-2006, 05:52 PM

#25

Zack342

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Quote:

Originally Posted by nismology

I have used this dyno many times to track the increase in power after my mods. I have had consistent gains when compared to other modified maximas.

01-01-2006, 05:59 PM

#26

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Quote:

Originally Posted by 98SEBlackMax

And if it was reading high I would think my '96 which has alot more done to it than Zack's would read higher than 201 WHP.

You're proving my point. You have more mods than him yet put down similar numbers. Think about that. Furthermore, your numbers now are in-line with others that have 00VI, bolt-ons and tuning.

Quote:

Also to my knowledge no one else has the same combo of modifactions as Zack's '99. So it would be almost damn impossible to repeat the results anywhere else...

Last time i checked his mod list there was nothing special there. Perhaps i missed something.

01-01-2006, 06:02 PM

#27

nismology

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Quote:

Originally Posted by zack342

I have used this dyno to everytime I have done mods to my car so your disbelief means nothing.Anytime you wanna paypal me some money choose a dyno in the area and i will be happy to slap her down.

Barometric pressure changes all the time from day to day. If the operator doesn't put in accurate numbers the numbers can be altered, simple as that. And no, the dyno doesn't have a barometric sensor. Anomalous as far as i'm concerned until i start seeing dyno's of other 4G's with MEVI and stock ECU churning out 200 WHP.

01-01-2006, 06:05 PM

#28

Zack342

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Quote:

Originally Posted by nismology

Well i doubt you will, too many cheap 4th gen maxima oweners. How many guys have been modding there cars and have never dynoed?

01-01-2006, 06:06 PM

#29

98SEBlackMax

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Quote:

Originally Posted by nismology

You're proving my point. You have more mods than him yet put down similar numbers. Think about that. Your numbers now are in-line with others that have 00VI, bolt-ons and tuning.

Higher miles, not so great compression, and burning oil at about a quart every 1000 miles. If it wasn't for the SMT-6 tune my car's power output wouldn't be anything note worthy. Im waiting to see what a newer engine will do for my car. Also if im not mistaken these are both 3rd gear pulls.

Quote:

Originally Posted by nismology

Last time i checked his mod list there was nothing special there. Perhaps i missed something.

Got me, maybe it's all those additives he uses.

I would be interested in a re-dyno as well, maybe we can do something back to back next Spring. They moved this dyno to a new location so I wonder if that will change anything.

01-01-2006, 06:09 PM

#30

Zack342

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I am redynoing later this month.Wanna check to make sure the motor is ok after the misshift.

01-01-2006, 06:44 PM

#31

JSutter

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joe, please tell me that you and zack didnt dyno in 3rd gear, that skews numbers. 4th gear is closest to a 1:1 ratio.

01-01-2006, 07:25 PM

#32

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Quote:

Originally Posted by JSutter

joe, please tell me that you and zack didnt dyno in 3rd gear, that skews numbers. 4th gear is closest to a 1:1 ratio.

I always tune in 3rd cause it saves time and measure/fine tune everything in 4th when I am finishing up.

Best #s were done in 3rd but the SMT-6 final tests I did all in 4th. The 201 WHP was done in 3rd and i made 193~194 WHP in 4th several dyno pulls later. My 4th gear #s will always look bad cause they are done last and represent a worst case scernario.

01-01-2006, 08:05 PM

#33

JSutter

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well then you really dont have a 200 whp car

01-01-2006, 08:09 PM

#34

98SEBlackMax

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Quote:

Originally Posted by JSutter

well then you really dont have a 200 whp car

Not that I really care, it was still fast until it broke. When you do that many pulls (16 in an hour) the car doesn't put down the same power towards the end. The point was to tune the SMT6 and show gains. Just wait till I go back with a decent engine, I will dyno in 4th when I start; just for you guys.