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no sorry I should have been more descriptive, The issue is going into gear with the break applied sitting there idling. If you tap the throttle right when it goes into gear then it will idle in gear...

WOT tuning done, starts right up, but since there is an aftermarket transmission in car ( with no electrical hook ups) ecu doesn't know when car is in gear or park so when we put it in gear it dies....

no battery was disconnected the entire time.

installed camshaft, heads, and 102mm intake on a 2010 camaro. after hooking the battery back up before anything at all (just turning the key) the dash says engine power is reduced. double checked...

Thank you. Use it all the time. But what I am saying is there is a problem with how I am trying to get a g/cyl number on my own using math. When I plug in variables the airmass in grams/cyl the final...

have posted in other forums including ls1tech. Any system (e.f.i.) that models air flow uses the basis of the ideal gas law PV=nRT, to model airflow. I have calibrated/tuned e.f.i. vehicles for some...

I am located in Texas, and have frequently gone to the Austin to tune vehicles. I primarily build race engines, which is the reason I am in Houston (finishing up at SAM RACING).

512-673-6580

Thanks for the help

Alvin, on the thermodynamics book, is there any one in particular you know of ?

I will attend the next class if there are any open spots. Also, what do I enter for "V" in the equation? Do i enter the volume of the motor( if so in what units), or do I enter it as in % for ex....

I am going to buy this book. That chapter alone would be very useful. Do you talk about this in depth during your class?

In using speed density systems from what I understand the equation PV=nRT can be used to find air mass. Then with it would be possible to calculate fuel adjustments/needs of the motor. The "n"...

nevermind, needed to just look for a second, thanks

this is a tune in a 500 inch ls2 that also had a 250 shot on it before. now has been adjusted again since we are currently running the car n/a. on our superflow 902 the motor made in the 700's n/a...

thanks. makes sense, appreciate it.

what is the reason for the ls2 ve numbers being in the thousand margin ..... accuracy? thanks.

KR* throughout the scan

was leaning towards that but was waiting to mention it incase way off base, i am familiar with Bernoulli's laws/calculations we frequently discuss over it in cylinder head class at s.a.m. thank you...

ifr table

example to better explain my question

if you have 43 lb/hr injectors and you setup the table to 30lb/hr injectors with a gradual increase ( total of 10% at 80kpa) will the pcm change...

ok understnad now, was under the impression that the MAF took the circumference of the inlet and factored speed in with that, did not realize that it was actually reading the accurate amount of mass...

. i could see how the MAF would work placed before the supercharger because you are right what is going in, is going out and even though density is lower, air speed will be that much higher (which...

thanks for the info. also on that last paragraph you wrote, since they use that to calculate @ conditions where the maf is prone to be innacurate would that lessen the value or get rid of the VE...

currently reading "Engine Management Advanced Tuning" and in pg. 49 under mass air flow (incase those of you reading this own the book) it states

" MASS AIR FLOW - mass air flow systems rely...

it has an intercooler i wouldn't ever try one without. thanks for the info also.

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