somebody please tell me what is wrong!!
08-12-2007, 01:56 AM
#1
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Join Date: May 2006
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somebody please tell me what is wrong!!
Ok here it is...after a H/C/I swap, 42lb injector, 255 pump, boost pipe, 80MM C&L massair meter my car was make 374hp to the wheels on a chip dyno tune and running 6lbs of boost on my paxton blower....the car ran great....havent touched it and about 2 months later the car is now running pig rich...so rich that i would have to floor it to start to car and it would let my rev over 4800rpms...so i advanced my timing by 2degrees and that allowed me to rev out to my normal 5500 rpms...just kinda seems a little sluggish....so i put new FR 9mm wires and MSD cap and rotor and a smaller pulley to reach 8lbs and it pulls good but it just seems sluggish as hell.......so is it possible for the Dyno tune to have gone bad?>
SO SLUGGISH that tonight i ran a stock 99 Trans am from 2nd- the end of 4th and i only came out about 1 car ahead......He says that at the track his best time was a 13.5
SOMEBODY THAT KNOW ABOUT TUNING I NEED SOME ADVISE!!!!!
SO SLUGGISH that tonight i ran a stock 99 Trans am from 2nd- the end of 4th and i only came out about 1 car ahead......He says that at the track his best time was a 13.5
SOMEBODY THAT KNOW ABOUT TUNING I NEED SOME ADVISE!!!!!
08-12-2007, 07:40 AM
#7
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Location: Puerto Rico
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RE: somebody please tell me what is wrong!!
Check if something in the system might have gone bad after the tuning...... DIY KOEO/KOER/Cylinder Balance Self-Test
08-12-2007, 10:36 AM
#8
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RE: somebody please tell me what is wrong!!
i'll check to see if the mass air meter is dirty...but i dont think it would get that dirty after only running the car for 2 1/2 months since the install and tune...but i guess u never kno......is it possible for a dyno tune to just go bad out of kno where
08-12-2007, 10:48 AM
#9
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Join Date: Feb 2007
Location: Long Island, NY
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RE: somebody please tell me what is wrong!!
Something I heard about Dyno tunes...pleaseschool meif I am wrong
When they burn the chip, it is a definite setting based on the conditions of that day. If you change location, altitude, the chip will not adjust like the stock computer would....
So the manual settings of the chip would not change...but if other conditionshave,the old tune on the chipmay not work well with them.
I would think that a change in weather, dirty MAF, bad O2 sensors...all can have an effect on it
When they burn the chip, it is a definite setting based on the conditions of that day. If you change location, altitude, the chip will not adjust like the stock computer would....
So the manual settings of the chip would not change...but if other conditionshave,the old tune on the chipmay not work well with them.
I would think that a change in weather, dirty MAF, bad O2 sensors...all can have an effect on it
08-12-2007, 11:09 AM
#10
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RE: somebody please tell me what is wrong!!
what i am going to do i think is call up the place that "dyno tuned" my car in Pottstown, PA...Performance Specialties....( i will never go back again) and see if this situation holds any water on maybe having it retuned for free of cost .....becuase the way i look at it it was a complete waste of 650 bucks for a tune that only lastest 2 months....THAT IS TOTAL BS