TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Seeking opinions.

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Old 09-10-2008, 10:36 PM
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Car: 89 Trans Am... 92 25th RS
Engine: TPI 350 .03 over ported lower&bowls
Transmission: 700R
Axle/Gears: 2:73
Seeking opinions.

Hey folks. I have been running the fresh motor all summer its silky and strong. Recently i have noticed idle problems here and there, also luke warm hard starting. Investigation showed two injectors with very low resistance. I replaced all the injectors when i built the thing with obviously poor quality units as this is the second problem i have had with them. They are still warranted but i do not want to go through this project again needlessly. What injectors seem to be on the higher side of reliability?
Old 09-11-2008, 10:04 AM
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Car: 1989 Firebird Formula
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Re: Seeking opinions.

If you do a quick search, most people like ford injectors. I use them and have had no problems.
Old 09-11-2008, 10:19 AM
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Re: Seeking opinions.

LS1 injectors and never look back.
Old 09-12-2008, 12:02 AM
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Car: 89 Trans Am... 92 25th RS
Engine: TPI 350 .03 over ported lower&bowls
Transmission: 700R
Axle/Gears: 2:73
Re: Seeking opinions.

I did a search. Some people do like ford injectors, but a search on such a matter brings endless results. Its why I was seeking opinions. Thanks for yours, It seems a good bet. Has to beat the hell outa what I have going on at the moment...
Old 09-12-2008, 07:53 AM
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Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
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Axle/Gears: 3.73 9 bolt Posi
Re: Seeking opinions.

No problem. After my factory injectors went bad, I used Accel ones for a while... they only lasted about a year before they began failing! My advice is to stay away from Accel. Just my 2 cents.

Hope this helps!
Old 09-12-2008, 09:52 AM
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Re: Seeking opinions.

Originally Posted by NicksToyTA
Hey folks. I have been running the fresh motor all summer its silky and strong. Recently i have noticed idle problems here and there, also luke warm hard starting. Investigation showed two injectors with very low resistance. I replaced all the injectors when i built the thing with obviously poor quality units as this is the second problem i have had with them. They are still warranted but i do not want to go through this project again needlessly. What injectors seem to be on the higher side of reliability?

What kind of injectors, did you have and what kind, do you have now?

Just wondering, so not to travel your unfortunate path.

I run the ford design II
Old 09-14-2008, 04:32 PM
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Car: 89 Trans Am... 92 25th RS
Engine: TPI 350 .03 over ported lower&bowls
Transmission: 700R
Axle/Gears: 2:73
Re: Seeking opinions.

Well....... I let one of my suppliers talk me into trying his remans. You see how it turned out he reimbursed me but the labor is a fall as well as a PITA. The company is Uremco........ I wouldn't recommend it.
Old 09-14-2008, 07:31 PM
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Car: 1991 TransAm GTA 350
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Re: Seeking opinions.

Take a look at these videos http://www.youtube.com/user/rbanner100.
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