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TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

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Old 03-08-2010, 11:52 PM   #1
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Ultimate TBI?

I am getting ready this week to do the ultimate tbi on my 1991 firebird with a 350 tbi. Does anyone out there know of what kind of gains i can expect from them? I already have a cat back exhaust and I am adding a new set of headers this week as well.

Last edited by iamnicoli; 03-08-2010 at 11:53 PM. Reason: Forgot to add something.
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Old 03-09-2010, 05:16 AM   #2
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Car: 91Trans am WS6
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23

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Re: Ultimate TBI?

This has been posted in many treads, the stock TB starts chocking at around 280fwhp http://www.thirdgen.org/techboard/po...488-post2.html
In this case if your 350 is not making over 275FWHP and someone would swap your TB for a stock or ultimate modded one you would probably never notice.
On the other hand, you would notice if someone would play with your tune and fueling.
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91 350 .060 over, 9.8 CR, Scat rotating assembly, KB193 pistons, Floating pins, CCA 8-500-8 + roller lifters + Magnum pushroads + 981-16 valve springs, Cloyes 9-3157 timing chain, Durabond bearings, Scorpion Performance 1.5 roller rockers, Summitracing 162108 aluminium heads, 47mm 3704, DIY cold air intake, RBob's EBL flash, ACD#EP241 TPI fuel pump, turbocity's 46mm TB +VRFPR, dctrumpet's #80 injectors @ 10-18psi VRFP, DIY 700r4 Pro Built RR, 3.5"aluminium driveshaft, Eaton LSD, GM 3.23, mac headers #TF8692, hoocker #16823 cat back, catco 3" cat, 3 wire heated O2 sensor, Bilsteins, ebmiller88's 1LE front brakes
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Old 03-09-2010, 05:16 AM
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