has anyone had any recent experience with
upgrading their ecu?
i know that there are several choices including
jwt, stillen, jet, etc.
any recommedations?

thanks

 

I too am in the market for an upgraded ECU. I need one that will correct for having a SC also. Any suggestions/recommendations? Thanks

Kirk

 

I just put the G-force ECU in lask week. The perfomance is outstanding. You can get this ECU for about $475 from Cheston at www.maximadriver.com If you tell him you have a SC they will do special programming for you. Same as the Stillen ECU.

 

I had a JWT ECU installed a few months ago. I'm pleased with the performance from it. I just had a dyno done, but I believe the test was not done correctly. I'm going to have another dyno done asap. I know they can program one for nos, and I think they can do one for sc as well.

 

I have the a 95 JWT ECU in my 1997 maxima and its my favorite modification. Throttle response it great and the power can be felt throughout the power band. Especailly between the 3000 and 4800 RPMS. I dont know much about the UPRD ECU, but people have claimed it to give simliar gains to the JWT ECU.

Does anybody know if the JWT ECU can be used with the Stillen Supercharger?

 

I too have a 97 how did you get a 95 ECU to work with it from what I heard it causes some issues with the O2 sensors when using the JWT ECU in a 97? Can u tell me what you had to do to get a 95 ECU to work with your 97? Also, do you have any performance numbers (track, dyno...) to see the difference?

 

Its a direct swap. All you have to do is swap the 1997 ECU out and replace it with a 1995/96 JWT ECU. The MIL indicator did come on indicating that there was a "rear heated 02 Sensor", however there has been absolutely no driveabilty problems with the modded ECU. If fact I can only say good things about this perfomance mod. Its defianlty worth the money. I have no dyno's or track tests yet, but the power is defiantly there........you will feel it. Personally i think it gave just as much power as my SS Catman ypipe.

 

What are the redlines for all of ECU,s.

 

I'm not sure about the UPRD ECU, but the JWT ECU bumps the rev limiter up 500 rpm(Above the normal redline). This is done for both manual and automatic modded ECU's. For automatic cars the driver will have to manually shift in order to achieve this. The JWT also removes the speed limiter.

 

how much does the JWT ecu cost?

 

Cattman sells the JWT ECU upgrade for $565, which is much cheaper then what JWT sells it for. I believe Avalon Racing was a doing a special on manual transmission JWT ECU's not to long ago (~$500).

 

Can you get the JWT ecu moded for a SC? If so, does cattman have them like that in the core program? Thanks

Kirk

 

Installed the UPRD in my '97 a month ago. Better pull above 3500rpm. There's a small hesitation down low at 2000-2500 though. Notice it only when crusing - not racing.

No dyno yet but soon - takes 3+ weeks to get dyno time...