OBD1 Performance chip ?
Thread Starter
Race Director
Joined: Feb 2006
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From: Inside the woods living my passion
St. Jude Donor '07-'08
OBD1 Performance chip ?
Just wondering if any of you guys and gals have one in there 82,84 or any other OBD1 gen pcm for auto tran's vette's? And notice any gains what so ever or at least notice a shift point change, delayed TQ conv lockup ect ect..
Pro
Joined: Sep 2001
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From: Stuck in the 80's
Umm, do you mean an over the counter chip like Hypertech etc? I have made my own OBDI chip with significant changes to the torque convert lock-up characteristics. I don't know if they equate to performance gains, but I sure do like how it drives esp. around town, no more lock-unlock-lock bog shudder unlock lock etc.
Changes I made to timing and fuel probably have more to do with perfomance than torque converter lock up, but I have no time slips to show it, just scan tool data showing reduced knock retard and my butt-O-meter/tire spin.
Changes I made to timing and fuel probably have more to do with perfomance than torque converter lock up, but I have no time slips to show it, just scan tool data showing reduced knock retard and my butt-O-meter/tire spin.
Thread Starter
Race Director
Joined: Feb 2006
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From: Inside the woods living my passion
St. Jude Donor '07-'08
Are the "over the counter chip's" crap? i advanced the timing on mine and uped the octane and made a big diff .. But the lock in lock out boggy stuff has got to go..
Pro
Joined: Sep 2001
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From: Stuck in the 80's
I have heard they are not worth the money but I have not personally used one in my Corvette. I have used them in my G-bodies, no real gain there, one of them did delay the TC lock-up but with a TH200-4R you don't have the big 1-2 ratio drop so it's not an issue compared to the TH700-R4 in the Corvette.
I have compared the binary code between a stock chip and a Hypertech and other than the fan temps and some more timing you really don't get much for you money. JMO
I have compared the binary code between a stock chip and a Hypertech and other than the fan temps and some more timing you really don't get much for you money. JMO
Melting Slicks
Joined: Apr 2002
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From: St. Charles, MO Route 66 Corvette Club
Gboby5 has modified the "chip" in my 89 Vette (removed -12 degree timing and trannie shift change) and the results are simply remarkable. I do not know much about the "tuning" of an engine...however, gbody5 knows a lot about it 
Le Mans Master
Joined: Aug 2005
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From: Eagle River AK
St. Jude Donor '06-'07-'08-'09-'10,'14
Originally Posted by C3Racing
Just wondering if any of you guys and gals have one in there 82,84 or any other OBD1 gen pcm for auto tran's vette's? And notice any gains what so ever or at least notice a shift point change, delayed TQ conv lockup ect ect..
