3 (E38) engine swaps/conversion's rev limiting at 5,500RPM's

[Taz]

I can't find a corvette pedal...working on a standalone harness for a 2008 LY6 6.0...Wanted try the Corvette Manual OS...

GM part # 25835421 ('05-'11 Corvette). GM list price = $98.37 .... GM Parts Direct (www.gmpartsdirect.com) = $58.62


Regards,
Taz

[GAMEOVER]

Thanks Taz, I just ordered one...Didn't think they were that cheap NEW

[gmh308]

(2) 2007 5.3ltr & (1) 2008 6.0ltr
Originally rev limit's were set to 6300-6500RPM's but none of the engine's would rev past 5,500RPM's...so I went thru and set every rev limiter function to 8,000RPM's to try and figure which function in the Tune was causing this and nothing...All 3 vehicles are mated with TH350 transmission's
I attached a 2007 5.3 file

If you are still having trouble try this and see if the rpm limiter is fixed:

2007 Silverado Juan Sotelo 5.3 Modified_0009.tun

[gmh308]

If you are still having trouble try this and see if the rpm limiter is fixed:

2007 Silverado Juan Sotelo 5.3 Modified_0009.tun

Happy New Year! Any luck Mr Gameover?

[GAMEOVER]

The holidays kinda put a hold on everything...I should be able to try your fix early next week...

[GAMEOVER]

Finally got to try your fix gmh308, and it worked...Doesn't rev limit at all...
But I can't find what was done....Or was it something behind the scenes...

[gmh308]

Finally got to try your fix gmh308, and it worked...Doesn't rev limit at all...
But I can't find what was done....Or was it something behind the scenes...

Glad to hear it did it for you. Yes "behind the scenes" one might say . Cheers.

[GMPX]

Finally got to try your fix gmh308, and it worked...Doesn't rev limit at all...

Mmm, sounds like if you had run with a manual tune from the beginning none of this would have happened . When the ECM expects to 'hear' from the TCM it will do weird stuff when there is nobody home. Why GM choose to limit RPM (or torque) with a bad TCM is beyond me.

[minytrker]

I have tunes many e38 engine sways. I always use manual os when it has non computer transmission. The very first one I did I tried I used auto os and ran into all kinds of weird problems.

[GAMEOVER]

Thats what im gonna have to do from now on, all manual OS...