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I have a C5 & a C7 Corvette. I want to run them in an index class but both cars are about 2 - 3 tenths too quick.
I am told I can command the throttles less than 100% to scrub off some e.t.
How do...

Had my 2004 Corvette tuned recently, the tuner disabled the long term fuel trims.

Any thoughts on this?

What are the advantages or disadvantages?

408 cid motor with 236/244 cam.

my email is dick@billiardcue.com

04 Corvette capable of running in the tens, level V RPM trans recently refreshed, 3800 Vigilante converter.

That is what I have been doing too, but the 2-3 shift isn't always at the the RPM point, usually well above.
Someone suggested trying the MPH method.

WOT settings - do you use MPH or RPM as the guiding parameter for the 1-2 and 2-3 shift points?
I've been using RPM, my 1-2 shift is always right on the money but the 2-3 moves around.

P0654 Engine RPM Output Circuit Malfunction
What does this code mean?

If I remove the EVAP purge solenoid and the AIR system on an 04 Corvette what do I need to do to not throw codes?

I remove the key also.

Mine is set to clear the codes just as the picture.

My car is a 2004 Corvette, I've reflashed it probably 50 times and this has happened 5 or 6 times. It happened yesterday which is the reason for this post.
I get the check gauges light and none of...

Why on occasion after I flash a new tune into the PCM the dash guages do not function?
I reflash the new tune and everything is aok.

Need a tune file for a stock 2004 Corvette automatic, it is not included in the 'sticky' list.

Need a stock tune for 2004 Corvette automatic, it's not on the list.

Does changing the injector flow rate B4001 effect the car's ability to correctly compute fuel mileage on the dash display?

B4001 IFR settings question.

If you increase the IFR settings does it make the car run richer or leaner?

Is this also true for the 1-2 and 2-1 shift settings?

I bought one this morning at the parts store, wonder how accurate it is.
It reads 61 psi. I have a Kenne Bell boost-a-pump and the pressure goes to 63 psi at maximum setting.

What fuel pressure guage set up works best for EFI logging?

Thanks for the Excel IFR tables.
My tables have been skewed by different tuners. If I use the values in the spreadsheet should I be correct?

TAQuickness posted this Excel spreadsheet and my 40% increase settings are real close to these numbers. I just did the math and 42 is 40% larger than 30.

My B4349 is now 0.025497, is that a...

Done - see first post.

What is an RAF log?
What are IAC counts?

Thanks

done


Do I create a spreadsheet or are they available online?


I will make this change.


done

Changing the head and cam LS1 in my 04 Vette to an LS2 408 h/c motor.
What do I need to change in my tune to make the car driveable until it gets to the dyno tuner?
Changing 30# ford injectors to...