C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

87 vette question

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Old Jul 19, 2013 | 01:15 AM
  #21  
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Default Definition file

Originally Posted by cpurepair785
My friend and I are trying to tune an 88 Chevy Corvette with tunerpro rt. I see that the $6e.xdf file was suggested for this post but I see in the definition file this.

$32B 1227165 32B.xdf 1227165_160.ads 87-88 5.0/5.7 F & Y Body

Does anyone know which one should be used for an 88 Chevy Corvette?
Hi the 32b def will work on an 87 88 but what i found with the larger 434 CUI engine it would start then stall once or twice because of the starting circut the 32b used the extra fuel injector the start injector to start the engine and the newer 6e def file used all 8 injectors so the 32b was priming a few cyls and not enough and the 6E was priming all 8 it was the better choice for me to use my engine almost runs perfect now i find that while it is cold the engine stumbles and what not but as soon as the O2 sensor warms up it runs good i am thinking of upgrading to the 2 or 3 wire O2 sensor , I also have a gauge attached to a second o2 sensor to show my mixture so i can make the appropriate adjustments this is a must for anyone trying this on there own . I cannot remember what it is called but it is worth the money ,
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Old Jul 19, 2013 | 07:49 AM
  #22  
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From: Glenbeulah Wi
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Originally Posted by Captin21
Hi the 32b def will work on an 87 88 but what i found with the larger 434 CUI engine it would start then stall once or twice because of the starting circut the 32b used the extra fuel injector the start injector to start the engine and the newer 6e def file used all 8 injectors so the 32b was priming a few cyls and not enough and the 6E was priming all 8 it was the better choice for me to use my engine almost runs perfect now i find that while it is cold the engine stumbles and what not but as soon as the O2 sensor warms up it runs good i am thinking of upgrading to the 2 or 3 wire O2 sensor , I also have a gauge attached to a second o2 sensor to show my mixture so i can make the appropriate adjustments this is a must for anyone trying this on there own . I cannot remember what it is called but it is worth the money ,
The 32B does not need the cold start injector, you need to increase the cranking injector pulse width and it will work just like 6E on the starts.
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