For Those Who Care

[OhNo- 5-0]

For those who care to take a guess at the issue or have seen this issue before!-

As warmer weather nears, I'll be fiddling with the car to get more info. Here are the specs/ concerns:

-88 original 5.0 car Paxton novi 1000 supercharged with FMU
- (No chip in ECU)
-Car is still speed density

Issue: After reaching NOT, the car sputters at maybe 2300rpm-3000 rpm (sounds almost like fuel cut) . Before and after those rpms, car has good power and runs fine

Again, if anyone feels confident they have a good test for me to do before I begin to do the diagnostics, your knowledge would be greatly appreciated!!

 

[jrichker]

Dump codes sticky.

Look at the top of the 5.0 Tech forum where the sticky threads are posted. One of them is how to dump the computer codes. I highly suggest that you read it and follow the instructions to dump the codes.

 

[7991LXnSHO]

Can you even run a speed density with a supercharger? That seems likely to exceed the stock computer's programming if changing c/h/I will.

 

[coupestang2]

Can you even run a speed density with a supercharger? That seems likely to exceed the stock computer's programming if changing c/h/I will.

Yes...with a stand alone system like megasquirt, Accel, Holley..etc.

 

[Mustang5L5]

Step #1, run the codes


But, gonna go out on a limb here and guess that a supercharged setup on a stock SD system might be part of the reason. I'd run the codes first, aside from anything else obviously wrong, I'd suggest a Mass Air conversion to start

 

[7991LXnSHO]

Yep, that's exactly what I was thinking. Unless he left something important off the list...

But we'll hopefully hear the codes.