Capt.shawn

Hi,
I have the above listed car. I'll try to keep this as short as I can but the car started having a hesitation when you would take off normal. Floor it and it blows the tires away but it's also running very rough at idle. I've changed everything you can think of but it still runs like crap. The only thing that I may have messed up on is I couldn't find the correct injector size when I was changing them and not being able to find out if they were 22 or 24's I went with 23lb injectors thinking the ecm would catch the difference. It runs extremely rich when cold but then leans out once up to 160 deg and runs a lot better but still not right. Any ideas?

Tuned Performance

iTrader: (92)

If they are a Bosch injector you might need to tune for them. Adjust the batty voltage / injector offsets.
https://www.thirdgen.org/forums/diy-...or-sticky.html

ULTM8Z

Anyway to get the p/n and mfgr of the injectors? If they're bigger than stock, then you'll have to adjust the injector constant in the calibration. The ECM will not do that automatically.

91RS5speed

The L98s came with 22# stock so the car will run rich unless you get a chip burned or put the correct injectors in. The ECU will make some adjustments but not until the engine reaches closed loop at 120 or so. I wouldn't be surprised if it is still running rich in closed loop.