FAST 90 and LS2 TB?

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Jun 5, 2007 | 10:05 AM

algZO6

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Melting Slicks

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From: El Paso TX.

FAST 90 and LS2 TB?

When installing this combo what else besides the VE and PE tables do you have to change?

Jun 5, 2007 | 10:17 AM

99C5JA1

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From: Ankeny IA

You'll probably have to adjust the idle airflow, decay etc to get it to idle correctly. If it's unported depending on your mods you may not need to adjust the VE or PE. The Fast 90 unported on a mild engine is probably only going to net 5rwhp or so.

Jun 5, 2007 | 10:35 AM

GotMoJo

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From: Warner Robins Georgia

B4403 - Idle Airflow Effective Area
B4307 - Desired Airflow
B4308 - Airflow Parked

I would probably leave VE alone and tweak your trims using the MAF table , that is if your running one.

Jun 5, 2007 | 11:27 AM

99C5JA1

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From: Ankeny IA

If the intake and TB actually make significant power, then it would be worth it to tune both the VE table and MAF. It's my understanding that the LS PCM still references the VE tables in addition to the MAF below 3k. But unless he's running a pretty healthy combo the Fast/90 probably won't make a difference big enough to merit serious changes.

Jun 5, 2007 | 12:42 PM

Bill Curlee

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From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

I will be installing heads and cam and ported FAST90/90 on my 02 ZO6 soooooooon. This is good info!

Thanks for sharing! EFI Live will be the tuning software that i will use.

BC

Jun 5, 2007 | 12:53 PM

algZO6

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Melting Slicks

Joined: Jun 2004

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From: El Paso TX.

i read something about scaling the effective area by 48%. anyone know?

Jun 5, 2007 | 02:34 PM

zeevette

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From: Pasco WA

Also interested. Two different tuners have had a crack at my setup, and it still doesn't idle worth a s**t. Mine has a Cartek ported FAST, and a Tony Mamo ported TB.

Jun 5, 2007 | 02:42 PM

99C5JA1

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From: Ankeny IA

Quote:

Originally Posted by algZO6

i read something about scaling the effective area by 48%. anyone know?

Scaling the VE table? That is usually done for a cam swap (the why do I smell like I took a bath in high octane when I start my car issue). For just the 90mm Intake and TB I don't think you are looking at anything nearly that drastic. Your biggest problems will be adjusting the airflow for the TB at idle.