0411 swap issues

[Spastik Monkey]

I did my 411 swap today.

97 k2500 7.4 with Whipple.

It ran great before the swap. Now it runs like ass, I have to hold the gas to keep it running. Not throwing a CEL but I pulled codes p0103 and p0713. Connections look good on the pcm.

Any ideas? I've got towing to do this week.

 

[michael hurd]

Double and triple check your pinouts, and that no pins are bent, missing the socket.

Other than that, verify the program with your tuner. I can't help you much more than that, check the basics first before you talk to the tuner.

 

[Spastik Monkey]

Well, and that's the other part, it's a generic base tune. I don't know if those corrupt or not

 

[michael hurd]

Physically check all the pins for alignment and that all of the wiring is correct.

 

[OutlawDrifter]

trying to run forced induction on a stock tune is no bueno!

 

[Spastik Monkey]

trying to run forced induction on a stock tune is no bueno!

I still have the Whipple computer in place. I plan on deleting it after I get my fuel upgrades in place. It should at least idle

 

[michael hurd]

Has the tune been modified for a 2 or 3 bar map sensor? That's one of the questions I would ask when I called whoever gave you the tune.

If I am not mistaken, when swapping to a 411, you need to do a CASE relearn, but yours may not run long enough to do that, if it keeps wanting to stall out.

 

[88GMCtruck]

I'm going to throw an idea out there, but I wonder if the whipple add on computer is messing with the 0411? When I did my truck I put larger injectors and tuned the blackbox, however I am swapping to a 0411 tuned for the whipple.

I would ditch the whipple electronics, It's the largest variable and I'm willing to bet nobody has tuned a 0411 with it.

 

[RyanR]

I've ran 2 Whipples and on both of them I scrapped the electronics. Chunk them, get a proper tune, and you should be golden.

 

[Spastik Monkey]

I've ran 2 Whipples and on both of them I scrapped the electronics. Chunk them, get a proper tune, and you should be golden.

You didn't have fueling issues with the stock injectors?