99RamAirLS1

iTrader: (4)

All,

Is there a base tune for a 24x conversion to get my car running anyone would like to share with me! I will be having a friend help with this and hopeful for some insight.

94 Z28
LT1 24x conversion
02 PCM (Stock Tune)
LT4 Heads
LT4 Intake
42lb Greentops
Comp Cam
Headers

I installed the 02 PCM, Fired it up wont hold idle and running rich/smoking so shut off...

T/A KID

iTrader: (12)

Do you own hp tuners?

99RamAirLS1

iTrader: (4)

Friend does

99RamAirLS1

iTrader: (4)

......

99RamAirLS1

iTrader: (4)

Tips?

moehorsepower

iTrader: (3)

Just remember to tune to an LT and not an LS, Be sure to change the injector bank, it is different and if the FPR is vacum then your IFR is constant, if not, then it adjust with the KPA.

SAPPER

iTrader: (10)

Your best bet is to contact James at shortuning.com. It'll cost a little but if you give him all the specs on the car, it won't be on the dyno long. He's awesome with the 24x.

99RamAirLS1

iTrader: (4)

I appreciate the feedback! It is showing 90 on KPA and just keeps falling on its face at 1300RPMS and wanting to backfire. I changed out the MAP sensor today and same result, will circle back on stuff...

AdsoYo

iTrader: (1)

I can email you mine if you want. It's WAY better than the 24x tune in hptuner's repository but I'm still experimenting with some fueling aspects. Have you entered the correct data for those 42# injectors? That should have been step 1.

If you're seeing 90kpa with a new map sensor, then that's really weird. If loading up a new tune file doesn't help, then I'm not sure where to look in the hardware. Maybe you have an enormous vacuum leak somewhere?

I think that should also help with the question in your other thread. Try a new tune file, and look for a vacuum leak since 90kpa is pretty much zero vacuum.

Slowhawk

iTrader: (12)

Common issue is the coil harness is flipped, see that a lot on conversions.
Next, some people rewire firing order,so swapping it in the computer can be backwards.

99RamAirLS1

iTrader: (4)

All of this and the Rockers were to tight....adjusted lash and runs like a champ!