HP gains with JWT ECU

MaddMatt · Apr 11, 2001

I asked this question in the Classic forum already, but haven't gotten any response.

How much hp at the wheels do you get with the standard non turbo, stock cam JWT ECU upgrade? Mods I have are header, exhaust, JWT POP, and underdrive pullies.

Thanks,

------------------
Matt
92 SE-R from Heck

Storm88000 · Apr 11, 2001

Like anywhere from 4-6hp, typically. But don't forget your car may feel faster cause of the raised rev limiter

------------------
Jordan White (Stormy)
'98 SE(R) w/ goodies
15.1 @ 90mph at Englishtown, NJ

NyceP26 · Apr 11, 2001

I'd say anywheres to 3-4HP gain. The best thing about that ECU is watching your RPM go to about 7800...Then on the road watching it take you to about 140+, well at least thats what I have seen so far. Anybody else take their cars to the limit with the ECU??

------------------
Peter
..on AIM = NyceP26
97 200SX SE-R
PR CAI,JWT ECU (with correct timing now @ 15TDC),91 INTAKE CAM,
KYB AGX,EIBACH SPORTLINE,
FSTB, F/R X-DRILLED ROTORS,

RollcageSR20 · Apr 11, 2001

Originally posted by MaddMatt:
I asked this question in the Classic forum already, but haven't gotten any response.

How much hp at the wheels do you get with the standard non turbo, stock cam JWT ECU upgrade? Mods I have are header, exhaust, JWT POP, and underdrive pullies.

Thanks,

Here's a link to Rob Cadle's back-to-back dyno chart of the stock ECU vs. the JWT ECU. He had the same mods you do at the time this dyno was taken (except you have a POP, and he has a CAI.) Check it out.

http://www.se-r.net/engine/jwt_ecu/index.html

Andrew Phan
1998 200SX SE-R
1993 NX2000

[This message has been edited by RollcageSR20 (edited 04-11-2001).]

Monsoon · Apr 11, 2001

what are you talking about? my se-r doesn't have a rev-limter i don't think. it's seen 8,000 before (darn wheelspin).

ehh, i'm just bored.

------------------

RPWSER · Apr 11, 2001

Originally posted by MaddMatt:
So the consensus is 3-5 hp. Looks like Rob got ~5.5 at the wheels. For $595 that's a lot of money for few horses. Is it really worth it?

The 5 Hp isnt the only thing you gain though. ANd look at it this way, if you want an ECU, JW is the only one, so you are kinda forced to get it.

------------------
Ryan Walsh, 1997 200sx SE-R w/ ES mounts, JWT s4's, AEBS 4-1, PR CAI, Greddy cat-back, Sportlines/AGX's, Bridgestone re730's, Stillen GTR grill

Mel E Bog · Apr 11, 2001

IIRC Jun and UPRD also do ECU tuning. UPRD did the ECU's for the cam shootout in SCC in last June's issue.

Mel

NoVTECSER · Apr 11, 2001

Hell, look at my car. I LOST 7hp with the ECU. I think its something else going on, and I'm looking into it now.

nj1266 · Apr 11, 2001

I would give my left testicle for a JWT ECU on my 98 SE-R.

Eventually I am going to buckle and do the retrofit that Andrew and others are doing.

I was so pissed of seeing all the lame ass drivers passing me on the straights of Big Willow because of the lamo rev limiter and speed limiter that I kept hitting. These guys with teutonic and high powered JDM cars were embarassed on the twisties by the SE-R. I would have killed them in the straights if it was not for my stock ECU. I swear that the next time I am at Big Willow it will be with a JWT ECU.

The HP increase is not the issue. Removing the limiters on my car is. The 200SX especially benefits from the JWT ECU.

------------------
Naji Dahi, aka Red Mist
Fast 1998 SE-R Last of the SE-Rs
Slow 1996 G20 (AGXs/G20t springs, K&N drop in filter)

nj1266 · Apr 11, 2001

Originally posted by NoVTECSER:
Hell, look at my car. I LOST 7hp with the ECU. I think its something else going on, and I'm looking into it now.

Did you bring back your timing from 18 degrees to 15. With the stock ECU and stock cams you run higher timing. With the JWT ECU you bring down your timing to 15. Maybe that is the reason you lost power. what type of gas are you using? You must use 92 Octane with the JWT ECU.

------------------
Naji Dahi, aka Red Mist
Fast 1998 SE-R Last of the SE-Rs
Slow 1996 G20 (AGXs/G20t springs, K&N drop in filter)

RPWSER · Apr 11, 2001

Originally posted by Mel E Bog:
IIRC Jun and UPRD also do ECU tuning. UPRD did the ECU's for the cam shootout in SCC in last June's issue.

Mel

And how much would a JUN cost?! You didnt think to check that out did you. And it is no better than JWT.

------------------
Ryan Walsh, 1997 200sx SE-R w/ ES mounts, JWT s4's, AEBS 4-1, PR CAI, Greddy cat-back, Sportlines/AGX's, Bridgestone re730's, Stillen GTR grill

NoVTECSER · Apr 11, 2001

Did you bring back your timing from 18 degrees to 15. With the stock ECU and stock cams you run higher timing. With the JWT ECU you bring down your timing to 15. Maybe that is the reason you lost power. what type of gas are you using? You must use 92 Octane with the JWT ECU.

13, 15, 17 deg...its doesn't ,matter. No power gain anywhere. All I have ever run in my car has been 92 octane. I have the S3/S4 program, but no cams. I think that is the problem. This will be taken care of at the convention though.

Pit_Viper · Apr 11, 2001

Originally posted by NoVTECSER:
13, 15, 17 deg...its doesn't ,matter. No power gain anywhere. All I have ever run in my car has been 92 octane. I have the S3/S4 program, but no cams. I think that is the problem. This will be taken care of at the convention though.

Heh, wanna trade? I have the "regular" ECU, but I have the S4 cams...

MaddMatt · Apr 12, 2001

So the consensus is 3-5 hp. Looks like Rob got ~5.5 at the wheels. For $595 that's a lot of money for few horses. Is it really worth it?

------------------
Matt
92 SE-R from Heck

Guest · Apr 18, 2001

look at the timeslip table in se-r.net: there are SE-Racers who have broken into the 14's w/ the ECU and w/ stock cams.

Mel E Bog · Apr 18, 2001

Originally posted by RPWSER:
And how much would a JUN cost?! You didnt think to check that out did you. And it is no better than JWT.

Never said it was better. Just wanted to let people know there are (supposed) alternatives to JWT.

HP gains with JWT ECU

Guest

Top Contributors this Month