Who has a JWT ecu in their 97 or 98 and what codes are you pulling?

And if you've dynoed, how much peak WHP/TQ did you gain?

 

Rear heated o2.

Same as the 95-96's.




/thread

 

This topic hasn't been beaten to death.
Don't post in my thread unless you have personal experience with the topic.

The previous owner of my JWT ECU had a 96 and gained a different amount of power than I did.

 

what mods do you have and has your friend??

 

Donate and search, and you will soon see it is.


Some help is better than none at all.

All cars are different, and even the same car is different on a different day.

BTW, got any dynos to show for this variance in 'peak power'?

JWT A32 ECU is known more for it's added area under the curve, not peak whp..And of course for its extended fuel cut.

Donating is smart, especially if you don't want to get grilled in this particular forum.

 

You'd be surprised.
Like NmexMAX said, every car is different and will put out slightly different numbers. There are just too many variables. I just don't understand how the year of the car matters when it comes to the gains from an ECU.

Oh yea....search > *

 

I have Neal's old ECU and our before and after the ECU dynos show different peak # differences.

Then maybe you shouldn't have posted anything...
I'm just curious of the gains 97-98 people got from the JWT ECU alone.

 

Neal's numbers were always lower than most yet he ran the fastest times. Dyno numbers don't mean **** when you compare two different cars on two different dynos.


[clearly]I was alluding to the fact that it doesn't matter what the year is.[/clearly] All 4th gens use the same VQ. Please explain to me how the year makes any difference oh how it'll react to an ECU upgrade.

 

does any have a jwt ecu in the 4.5 gens?

 

I have one in my 1999

 

Krismax has an 8000 fuel cut so he has it, and I believe Tilley has it too. None have before/after dynos, but that's irrelevant because JWT is overly conservative when it comes to timing and the 3.5 can take far more than the JWT ECU gives.

 

"Overly conservative" is a bit of an exaggeration. It offers a solid 3-5 degrees advance throughout the rev-range. Perhaps you're referring to the boosted JWT program?

 

Overly conservative for the VQ35 I mean. One of the reasons I don't want to go JWT.

 

The SMT-6 business looks pretty good if you can do without the potential for a raised rev-limit and datalogging capabilities (among other things of course).

 

Unfortunately I'm looking for a 7000 redline (I'm too much of a wuss for 7200), mucho ignition timing advance and A/F. Right now I'm looking into the Cefiro OBDI ecu conv. and if that falls through I'm probably gonna get an Emanage Ultimate (if these tards ever get it working).

 

yeah but we're not talking about 1/4 mile times.

So why the hell do we post dynos on here in the first place? Isn't that the point of the correction factors?
So if one person gains 1 WHP from a mod and another gains 10 WHP how do we know which one is right?
The fact of the matter is that you still don't understand my question.

Well if you don't know either then maybe you should unsubscribe because honestly you're just being annoying.
Just to let you know Zach dynoed less with his JWT ECU in his car than with the Stock ECU in there. And yes I know he has a 99, but he is one of the only before and after JWT ecu dynos I have seen.

p.s.- I have more than just the O2 sensor code with my JWT in.

 

You have a fuel relay code too. I think the fix MIGHT be in the 4th gen how to's.

 

I agree about "some help is better than none" and I appreciate all of the help you've given me in the past.

If someone could host mine I could give you mine, but I believe neal is the only one with his.

 

I can host, or photobucket will host for me shall I say.

 

I was simply giving you a prime example as to why comparing different cars on different dynos is erroneous. You mentioned seeing lower peak numbers on his ECU dyno. If a car dyno's low to begin with, relative gains are going to be different by default.
Bragging rights? All the prominent and credible members on this site will agree with me when i say that dyno numbers are best used in a mod-by-mod context with the SAME CAR on the SAME DYNO. Other than that, it's just "mine is bigger than yours."
You both might be right depending on the state of tune of the cars. Too many variables to make a blanket statement.
I understand it perfectly. You're asking how much peak WHP/WTQ people are getting in their 97-98 with JWT ECU. The point is 95-98 gain the same (on average) from the ECU, assuming the engine the car is in good operating condition.
Not yet. I'm having too much fun.
If you donated and searched you'd see plently of dynos with similar relative gains from 95-98.

My point is this, if cars other than your own see different gains from the JWT ECU, it won't be because of the difference in years. This has been proven over and over again.

 

With as close to the same atmospheric conditions as possible.

Should be a rule for the Advanced Forums.

 

In my particular case I pulled lower numbers than he did but gained more from the JWT ECU.
This is one of the reasons of this thread.

Yet there are still so many standards of how much power each modification should give you and how much power your car should make. It seems alot of prominent and well known members on here do compare their #'s, I bet alot of them would not completely agree with your statements. check out this thread for example: http://forums.maxima.org/showthread.php?t=444516

So I guess what you're saying is there is no use at all in comparing dynos from two 4th gen Maximas with the same mods even at the same dyno on the same day?

What do you mean by "tune of the cars"?

Well I appreciate your answer and all of the info you've given me. Alot of it does make sense. But I still prefer responses from 97-98 guys who have the JWT ECU...not some 20 year old who used to get beat up by his sister.

 

I really hope you 2 know each other

 

Nope. I don't have any sisters.

 

So which girl was beating you up?

 

I don't get it.
I didn't say comparing other car's numbers are completely irrelevant. I just wouldn't cry if the numbers happened to be off.

Two different cars with the same mods on the same dyno the same day doesn't really prove much besides which car is in better operation condition, i.e. compression numbers, condition of fuel injection system, condition of spark plugs, air filter clean/dirty, etc. Wouldn't say much else.
http://forums.maxima.org/subscriptions.php

 

Maybe I should be more specific, there wasn't a marginal difference between our dynos. He gained something like 1 hp and 2 tq while I gained like 6 hp and 12 tq. I should have clarified that in the first place.

dynos are more than just a measure of how one particular car responded to a particular mod on a particular day.
If one 4th gen (non-boosted) gains 15 whp (as well as good gains under the curve) from a Y-pipe then I expect similar gains. They are good references on what mod does what.

 

Actually i didn't dyno less. I dynoed the same. JWT ECU and stock ECU both made 201whp and 192wtq. Only difference was JWT ECU could go to 7200rpm.

I sent back the ECU after this with DYNOs and they retuned it to be optimized to work with my

 

You are so ridiculous.
Would you agree that two 4th gens with the SAME mods at the SAME dyno on the SAME day in the SAME condition would dyno similarly?

My point is that there have to be standards or else we wouldn't know wtf we are looking for.


Maybe you could post your dynos? I could have sworn there were some power differences.

 

They would, assuming both cars are in the same operating condition. But what would that prove? It's a useless and arbitrary comparison. One car will not "gain" more from a mod than another car.

There ARE standards for ECU gains scattered throughout this forum. And the gains are all similar 95-98. But you wouldn't know that unless you searched.

 

Canada is not invited to this party.

 

Search is far > you
http://www.forums.maxima.org/showthread.php?t=423821