I'm doing a mix and match of TPI parts. I have mostly an 86 305 TPI system, but the wiring and ECM are from an 88 TPI donor vehicle. I plan to use 22lb ~ 23lb injectors when I install the TPI system onto an old school SBC 350.

I've found several $32 & $32B 5.7 liter .bin files, but I am wondering if there is any advantage of using the $32 vs $32B .xdf / definition for a mostly stock old school SBC 350?

My previous TPI experience was using $8D.



dave w

 

I would use $6E and eliminate the 9th injector.

RBob.

 

I like the idea of eliminating the 9th injector.

Any other things I should look for in the $6E definition? Mostly I'm trying to keep things simple, so if I need TPI service parts I can say the TPI system is 89 Vette. I'm wondering if the MAF is the same for $32B vs $6E.

dave w

 

Don't forget to disable VATs. And once tuned enable highway mode for better mileage. '86 through '89 TPI used an analog MAF, all the same.

RBob.

 

$6e is the way togo I have used arar with iron heads and no pinging.

 

arar? maybe arap?

dave w

 

yes the corvette arar

 

Dang it, I don't have the arar .bin

 

pm me with your email and I will send it tomorrow

 

PM Sent

 

I have a old laptop for reprograming, Forgot I had all my .bin backed up on a jump drive. File sent. Not modified in any way. (take the vats out) !!

 

OK, I found out that the injectors Rochester #5235047 are 305 injectors that flow about 19 lb / hr. I am wondering if I change the injector flow in the $6E .bin file, will I be OK with using the 5235047 injectors on a 350?

dave w

 

go to southbayinjectors.com and get the bosch3 22#hr ones. I would not raise the fuel pressure and over work the injectors and risk a o-ring failure.

 

I dont see why not. They will cycle longer but they should be ok as long as the motor is not modded big time.