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Boostd1
12sec Club
Joined: 28 Oct 2008
Posts: 437
Location: Thornton, Colorado
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 Posted: Thu Jun 25, 2009 9:41 pm Post subject: LS1 TB! |
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Well my friend got a big bore throttle body for his LS1 Formula and holy crap is that throttle response insane! Tuned the AFR's and MAF a bit and the car was running hard! The 4 speed auto spun second pretty good 
Good part for me is, I convinced him to give me his old TB. Bought the adapter kit and MAF connectors, IAC and TPS sensors and was ready to go! Small problem with the TPS sensor though...at idle the car reads 20% TPS so the fueling is all messed up. I guess you have to re-write the PCM AFTER installing the new TB and TPS sensor then the PCM recalibrate for the new TPS. Put on the 85MM MAF from an LS6 and threw in a quick MAF chart and I was set to go!
The throttle response is absolutely nuts and the low end has improved quite a bit. Unfortunately, the new power fried another forward gear in the tranny some more...so now the tranny is really toast. Only about another week until the race one gets delivered, so I put the stock TB back on.
Long story short, free mods = 
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1998 Grand Prix GT | 12.91 @ 103 - Sold/Retired
2008 Saturn Astra XR | Sold
2007 Infiniti G35x | Current DD |
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91RSVert
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Joined: 16 May 2007
Posts: 2736
Location: AR
1991 Chevrolet Camaro RS
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| Posted: Fri Jun 26, 2009 4:13 am Post subject: |
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Did it bolt right up, or did you need an adapter?
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2008 GMC Z71
1991 Camaro RS Vert
1972 Jimmy 4x4
20ft Longhorn Car Hauler
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aaron_sK
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Joined: 23 Jan 2006
Posts: 8834
Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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| Posted: Fri Jun 26, 2009 8:09 am Post subject: |
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| 91RSVert wrote: | | Did it bolt right up, or did you need an adapter? |
| Boostd1 wrote: | | Bought the adapter kit |
Is the LS1 TPS not adjustable like the older ones? I get quite a bit of slop in the TPI sensor, so it's easy to dial in whatever you need for idle. |
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91RSVert
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Joined: 16 May 2007
Posts: 2736
Location: AR
1991 Chevrolet Camaro RS
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| Posted: Fri Jun 26, 2009 8:26 am Post subject: |
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Adapter kit can imply many thing. Wires, cables, etc.
If the TB on an LS1 is anything like that on the vortec trucks, no adjustment on anything. |
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Boostd1
12sec Club
Joined: 28 Oct 2008
Posts: 437
Location: Thornton, Colorado
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| Posted: Fri Jun 26, 2009 3:52 pm Post subject: |
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There is an adapter plate to bolt on the LS1 TB. Also needed the LS6 MAF, 3-5 wire for the TPS and the 5-5 wire with IAT breakout for the LS6 MAF
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1998 Grand Prix GT | 12.91 @ 103 - Sold/Retired
2008 Saturn Astra XR | Sold
2007 Infiniti G35x | Current DD |
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fiveoformula
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Joined: 08 Aug 2007
Posts: 1799
Location: OR
1988 Pontiac Formula
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| Posted: Fri Jun 26, 2009 9:00 pm Post subject: Re: LS1 TB! |
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| Boostd1 wrote: |
The new power fried another forward gear in the tranny some more...so now the tranny is really toast. Only about another week until the race one gets delivered, so I put the stock TB back on.
Long story short, free mods = |
Which forward gear do you have left now? lol last I heard you had 2nd and 4th?
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Boostd1
12sec Club
Joined: 28 Oct 2008
Posts: 437
Location: Thornton, Colorado
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| Posted: Sat Jun 27, 2009 6:28 pm Post subject: Re: LS1 TB! |
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| fiveoformula wrote: | | Boostd1 wrote: |
The new power fried another forward gear in the tranny some more...so now the tranny is really toast. Only about another week until the race one gets delivered, so I put the stock TB back on.
Long story short, free mods = |
Which forward gear do you have left now? lol last I heard you had 2nd and 4th? |
1st gear slips really really really bad, 2nd slips somewhat, 3rd is non existent and 4th is good!
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1998 Grand Prix GT | 12.91 @ 103 - Sold/Retired
2008 Saturn Astra XR | Sold
2007 Infiniti G35x | Current DD |
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91RSVert
Member
Joined: 16 May 2007
Posts: 2736
Location: AR
1991 Chevrolet Camaro RS
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| Posted: Sun Jun 28, 2009 4:15 pm Post subject: |
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| Did you ever try a ported stock? That was the next mod on my list, but having to f with the maf settings turned me away. |
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Boostd1
12sec Club
Joined: 28 Oct 2008
Posts: 437
Location: Thornton, Colorado
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| Posted: Mon Jun 29, 2009 11:48 am Post subject: |
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| 91RSVert wrote: | | Did you ever try a ported stock? That was the next mod on my list, but having to f with the maf settings turned me away. |
Ported stock is a waist of time IMHO...no real gains out of it. Larger gains are noticed by an even larger bore TB with no MAF inside the TB, blocking 1/4 of the passage.
Come on man...tuning the MAF is easy as pie
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1998 Grand Prix GT | 12.91 @ 103 - Sold/Retired
2008 Saturn Astra XR | Sold
2007 Infiniti G35x | Current DD |
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91RSVert
Member
Joined: 16 May 2007
Posts: 2736
Location: AR
1991 Chevrolet Camaro RS
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| Posted: Mon Jun 29, 2009 5:44 pm Post subject: |
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IMO, just removing that stupid "hump" in it would be gaining about another 1/3.
Tuning the maf cost more money I dont have. I wish EFIlive would do as they said 2 years ago and support the L67. Looks as if I bought the wrong program cause the other program would support my "new" truck as well.  |
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Boostd1
12sec Club
Joined: 28 Oct 2008
Posts: 437
Location: Thornton, Colorado
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| Posted: Mon Jun 29, 2009 7:40 pm Post subject: |
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| 91RSVert wrote: | IMO, just removing that stupid "hump" in it would be gaining about another 1/3.
Tuning the maf cost more money I dont have. I wish EFIlive would do as they said 2 years ago and support the L67. Looks as if I bought the wrong program cause the other program would support my "new" truck as well. |
Agreed. The tuning is easy as hell, its the damn tuner that costs a pretty dime haha
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1998 Grand Prix GT | 12.91 @ 103 - Sold/Retired
2008 Saturn Astra XR | Sold
2007 Infiniti G35x | Current DD |
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