Fast 90/90 ?
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Registered User
Joined: Jun 2010
Posts: 6
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From: wisconsin
Fast 90/90 ? Hey guys, I'm new to this site and looking for some tips. I have a 2000C5 and recently purchased a fast 90 intake and 90 TB. Just wondering if anyone on here has done this install?
Thanks!!
Thanks!!
Launching!
Joined: Feb 2005
Posts: 228
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From: Central California
Pretty simple install. Just make sure you've got the valley cover bolts that are the button head cap screw style (the ones that come with the FAST intake). The stock bolt heads are a little too tall and you risk cracking the bottom of the intake using them. Only other pointer is to make sure you follow the recommended torque sequence. What TB did you go with?
Thread Starter
Registered User
Joined: Jun 2010
Posts: 6
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From: wisconsin
Pretty simple install. Just make sure you've got the valley cover bolts that are the button head cap screw style (the ones that come with the FAST intake). The stock bolt heads are a little too tall and you risk cracking the bottom of the intake using them. Only other pointer is to make sure you follow the recommended torque sequence. What TB did you go with?
Thanks Red 99! Anyone know what the torque specs are??
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Torque spec and sequence is here:
http://www.ls1howto.com/index.php?article=5
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Registered User
Joined: Jun 2010
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From: wisconsin
I guess I didn't realize FAST made an electronic TB for the vette. I was under the impression most guys were using the LS2 TB or something similar and using a wiring adapter to get it to work.
Torque spec and sequence is here:
http://www.ls1howto.com/index.php?article=5
Torque spec and sequence is here:
http://www.ls1howto.com/index.php?article=5
TECH Enthusiast
Joined: Jul 2003
Posts: 507
Likes: 2
From: Ankeny, IA
Looks like that TB won't need a wiring adapter kit (it's an LS1/6 style). You may need to mount your motor/TPS on it (the picture I found shows it bare). So as long as the TB bolts up to the FAST you should be OK from a mounting/wiring standpoint. You will still need some tuning done to get it to at least idle correctly (and the tuner will probably want to tweak the whole tune some). If the engine is modded (heads, cam, etc) I would move to an 85mm MAF to go along with this setup.
Last edited by 99C5JA; Jun 28, 2010 at 12:05 PM.
Agreed. I just bought the connector online, cut my old connector off and spliced the required wires. I also went to speed density to get rid of my MAF which required me to buy and wire up a seperate IAT sensor since it was integral with my Z06 MAF. Overall very easy.
Thread Starter
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Joined: Jun 2010
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From: wisconsin
It looks like the TPI TB will hook up fine. I have a high flow MAS, my next plan is to add a set of 243 heads and longtube headers..Now I just had a guy tell me that the fast intakes are junk and tend to leak and warp, anyone else have problems with this or know anyone who has? I'm also thinking of camming the engine and wonder what others are running for cams?
Launching!
Joined: Jul 2008
Posts: 249
Likes: 0
From: cookeville, tn
It looks like the TPI TB will hook up fine. I have a high flow MAS, my next plan is to add a set of 243 heads and longtube headers..Now I just had a guy tell me that the fast intakes are junk and tend to leak and warp, anyone else have problems with this or know anyone who has? I'm also thinking of camming the engine and wonder what others are running for cams?
It looks like the TPI TB will hook up fine. I have a high flow MAS, my next plan is to add a set of 243 heads and longtube headers..Now I just had a guy tell me that the fast intakes are junk and tend to leak and warp, anyone else have problems with this or know anyone who has? I'm also thinking of camming the engine and wonder what others are running for cams?
TECH Enthusiast
Joined: Jul 2003
Posts: 507
Likes: 2
From: Ankeny, IA
It looks like the TPI TB will hook up fine. I have a high flow MAS, my next plan is to add a set of 243 heads and longtube headers..Now I just had a guy tell me that the fast intakes are junk and tend to leak and warp, anyone else have problems with this or know anyone who has? I'm also thinking of camming the engine and wonder what others are running for cams?
Thread Starter
Registered User
Joined: Jun 2010
Posts: 6
Likes: 0
From: wisconsin
TECH Enthusiast
Joined: Jul 2003
Posts: 507
Likes: 2
From: Ankeny, IA
Subjectively the car felt stronger in the mid to upper RPM. If there was a loss on the low end, I didn't notice it. On a stock C5 the 90/90 won't equate to a huge gain. But since you are already looking at heads and cam, it will pay off down the road.
