Im swapping a '91 L98 into my 86 TPI T/A, I posted a message in the DIY prom board and got the ARAP, 86, 91, hot start, cold start blah blah blah BS and it confused me. (No flame intended to those who answered, thank you, you did help a lil bit) heres my question

86 MAF Car, putting in '91 L98 (has 91 TPI system), I wanna keep it MAF, keep my harness, and all, which year chip do I buy?

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Fire fighting, Scuba Diving, and Fast cars.....Does life get any more exciting

'86 TPi T/A L98

Stuff on Order:
Ram Air Hood
4th gen Spoiler
Borla exhaust
Sub Frame Connectors
STB
and a bunch of other stuff

Q?-Does Prowler orange sound like it will look good on my T/A?

AOL Screen Name, Madbiker1

 

Made 350 swap with TPI in my 87 Maf and used
a stock gm 1988 chip for a 350 with good results, runs great and no codes. Check it out.


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1987 Black Camaro IROC-Z (original owner) Replaced LB9 @ 86100 miles.
New 350 Crate engine
Balanced & blueprinted
WP 67cc Heads 9.6:1 C.R.
Cam: 450lift,216dur@50,110ls
TPI Induction(from 305)
22# Fuel Injectors
SLP Intake runners
New Computer chip
K&N filters & Air Foil ,
Hothkis STB
SLP 1 3/4 Headers
CATCO 3" Catalytic conv.
SLP 3" Cat Back Exhaust
700R4 Auto
SLP Torque Converter (2400 stall)
Limited Slip rear
245/45/ZR-17 Tires
17x8.5 ATI 5 Razze Wheels
EST. 340HP
380#/ft of Torque
NEW TOY!

 

Use an 89 chip.

 

Why a 89 Chip??

 

He might have to. The '91 TPI doesn't have the ninth injector.

 

He is using the 86 TPI system with 91 l98
so he can use the 88 chip. In 89 no cold start injector thats why I did not use the
89 chip.

 

I am using the '91 TPI, so everyone agrees on the '89 Chip? Thanx for all the help.

Brian

 

My error on the year of TPI being used.
1989 GM chip is the correct choice.

 

I am sorry the answers confused you, but it indicates that you need to do a little more homework.

1) The 1989 Memcal IS the correct one to use since the 1991 TPI intake does not have a cold start injector and only the 1989 MAF system supported TPI with no cold start injector.

2) The ARAP.BIN is the BEST 1989 Memcal for an L98.

3) I re-read your question and I realize that you are installing the WHOLE 91 L98. So heads are not a problem.

If I think of any other differences, I will let you know.

[This message has been edited by Glenn91L98GTA (edited July 14, 2001).]