Thread: Car going lean WOT

When it was dyno'ed it did 196.7hp, 199.8tq but i didnt have a wideband at that time. The hp and tq lines where jagged as hell. I can post up a pic of the sheet if you want to see.
Its stock fuel pressure, i dont have a gauge.



It is the w11 BB t25 stock 9lbs. I just sold that and bought Strattons gti-r t28. What did you do to fix it? Just put in some sti sidefeed? and tune it out with the afc? Or just buy a jwt ecu?

Thanks for all the help guys.

charlie, i have no idea what you have no and what you will be adding but this is my recommendation and if you follow this list of parts and they are all working like they should your set up should run great.

option one-

jwt ecu
bb 370cc inj
z32 maf
adj nismo fpr

optioin 2-

calum basic ecu chipped for
bb 370cc inj
z32 maf
nismo fpr

option 3-
calum realtime
bb 370cc inj
z32 maf
nismo fpr

theres a few more options here but as your running a t28 theres no need to go over board at this time you know.

i think option one will be the cheapest most reliable set up. i ran a straight jwt ecu for years it made good power. and was reliable. i added my safc2 down the road and picked up 25whp just from leaning her out. jwt runs a bit rich as rich is safer then lean. now also it depends how rich the tune is from jwt by what cc inj you are running. the way jwt does it is they look at your inj and judge how much power your going to be making.

stratton.

Thanks for the info man. I already have a z32 in. and stock 370. Ill buy a nismo fpr. And try to find a JWT ecu

so if my 5bolt jpipe gasket is leaking, that will make the car run lean?

i got 50lbers, even though my computer was stock with a afc....just swapping to the 50lbers got rid of my lean issue. couple weeks later i got my jwt ecu tuned for my setup and now it runs very nice. little to no afc corrections at all