injector tuning question

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Jun 29, 2009 | 10:38 AM

95greenmaro

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From: houston, tx

injector tuning question

went from 30# to 42# injectors in my buddies car and the car started to stumble under load. we reprogrammed the ecm constant to the correct flow rate for the 42# injectors. this is in a lt1 car using tuner cat. do we need to go in and alter the ve tables? we put the 30#'s back in and the stumble quit, so that rules out the bad optispark. any help on this would be appreciated, thanks.

Jun 29, 2009 | 11:21 AM

wadelieck

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yes ve tables are off had the same problem.

Jun 29, 2009 | 11:38 AM

wadelieck

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o yea and the maf as well

Jun 29, 2009 | 11:39 AM

95greenmaro

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From: houston, tx

do you know how to retune them?

Jun 29, 2009 | 12:18 PM

wadelieck

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yea it really easy look in the help sec of hp tuners or you can call me and i will walk you threw it.

Jun 29, 2009 | 12:20 PM

wadelieck

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or i live in houston we can try to meet up some time tomorrow and get it right

Jun 29, 2009 | 12:20 PM

95greenmaro

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From: houston, tx

well we are using tuner cat and this for an lt1, does that make a difference or can you still walk us through it?

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Jun 29, 2009 | 12:24 PM

wadelieck

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o sorry i thought it was with hp tuners. i really dont know much about tunercat i have the program and will try to figure out a way to walk you threw it.

Jun 29, 2009 | 12:25 PM

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wadelieck

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Quote:

Originally Posted by 95greenmaro

what part of houston are you in? the car is in sumerwood if you know where that is

i have know idea where its at i am near I45 and 1960 in spring.

Jun 29, 2009 | 12:29 PM

#11

95greenmaro

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From: houston, tx

its not that far from you. if you come down 45 to bw8 and head east, its like 5 minutes past 59. do you know where the 1/8 mile track is?

Jun 29, 2009 | 12:31 PM

#12

wadelieck

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yea hmp i pretty much live there.

Jun 29, 2009 | 12:35 PM

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95greenmaro

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From: houston, tx

well its right over there. we have been out there quite a bit in his car. not so much in the last month do to technical difficulties. we usually go out there on sundays. do you run out there or just hang out?

Jun 29, 2009 | 12:37 PM

#14

wadelieck

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i run alot out there but usually go on Fridays i went on a Sunday about 3 months ago.

Jun 29, 2009 | 12:38 PM

#15

95greenmaro

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From: houston, tx

we went on a friday night and hated it, we knew it was import night but dang we were ready to try out the new mods on the car.

Jun 29, 2009 | 12:46 PM

#16

wadelieck

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yea i just go to tune other cars or see how my car is running. i have tuned prob 40 trucks and 100 cars there its just bad *** to see a car run like a 9.5 and when were one be running in the high 8 range but you can always see a huge diff when tuning at the track.