This is the response that I got from Jim Wolf Tech when I ask them about sending in my 98 200sx ser ecu to get it tuned for a SR20VE ,
Is this TRU ?
Thanks for your interest in JWT products. JWT can upgrade ECUs to run the SR20VE but you have to use the years of ECUs that we can upgrade. Since we do not do the 1998+ model ECUs for the SER yet, you will need to find a 1995-97 type ECU to send to JWT.The price to upgrade this is $595 and we can program for the parameters you have listed below. Call for more info or to place an order.
Here is a list of what we can do for the 1991+ Nissan Sentra SE-R/200SX/NX2000/G20/Primera/Sunny/Pulsar using the SR20DE engine.
Note: Go to our web site and enter the part # in our products section to get more information.
ECU upgrade $595.00 on an exchange basis. We remove the top speed limiter, raise the rev limiter to 7,700 rpm and put in the most aggressive fuel map and timing curve for 91+ premium fuel. We also optimize the throttle response code for better throttle response. Call for current turnaround time. (1990-97 at this time only) We do have turbo programming along with different injector/MAF combinations available. We can reprogram your ECU for use with the SR20DE-T Bluebird and Pulsar engines. Call us for details on this. We do offer an ECU core exchange option. The additional refundable core deposit is $500.00 for the 1991-94 models and $700.00 for the 1995-97 models. Call us for more details. ECU upgrades for the 98+ models are still in development. Check back with us later to see how our development is progressing. It is possible to use a 1995-97 style ECU into the 98-2001 models. Contact us for info.