2.0 LSJ Engine: How To Install Big Bore Throttle Body For Cheap!
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Joined: 03-20-05
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From: Rutherford, NJ
unless the entire intake runner for the blower is ported you will see vary minimal gains, once again the basics apply.
the smallest point in the system, determines system flow.
this larger TB simply max's out whats available as-is.
also the reason why people are giddy over the quicker revs is due to the larger low-TPS air flow and the faster rate at which the engine hits MAX VE, while at a lower TPS then stock thus making 10% TPS act like 30% did on the stock TB (for example only)
the smallest point in the system, determines system flow.
this larger TB simply max's out whats available as-is.
also the reason why people are giddy over the quicker revs is due to the larger low-TPS air flow and the faster rate at which the engine hits MAX VE, while at a lower TPS then stock thus making 10% TPS act like 30% did on the stock TB (for example only)
Example of TPS, when I slapped it on and just changed the etc scalar, no tuning, the car would hit -10 hg with less throttle than it would with the stock tb. I would be like a 1/4 of the way down on the gas and it would sit at around 0 on the boost gauge. It was EXTREMELY sensitive/touchy...but tuning gets rid of that
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From: the glove
Agreed with the TPS....you can tune it though so it acts very similar to stock though...but I don't think i'd say minimal gains. Definately gave at LEAST 5 to the wheels for me judging by the old butt dyno. I mean for 50 bucks, you can't go wrong. Supposedly Rebel gained like 10 whp or something untuned on a 2.8 pullied car I believe. They did a before and after.
Example of TPS, when I slapped it on and just changed the etc scalar, no tuning, the car would hit -10 hg with less throttle than it would with the stock tb. I would be like a 1/4 of the way down on the gas and it would sit at around 0 on the boost gauge. It was EXTREMELY sensitive/touchy...but tuning gets rid of that
Example of TPS, when I slapped it on and just changed the etc scalar, no tuning, the car would hit -10 hg with less throttle than it would with the stock tb. I would be like a 1/4 of the way down on the gas and it would sit at around 0 on the boost gauge. It was EXTREMELY sensitive/touchy...but tuning gets rid of that
a car that feels much faster then it actually is type deal.
there are definite gains to be had with this, no doubt about it, and its a DAM cheep thing to do, i was just putting the technical side of things out there so people dident think this was something more then it is.
i'll take a cheep power mod any day of the week.
my kinsler intake manifold will be fitted with one from dan, i could not imagine having a a proper intake manifold with a stock TB.
deal?
you are gaining flow, but not to the max potential of the new TB, UNLESS the entire intake is port matched to it.
Last edited by 06black; Feb 15, 2008 at 08:22 AM. Reason: Automerged Doublepost
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From: Chesterfield, MI
$50 shipped or plus shipping? Are you in Flint or PA right now?
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From: Horseheads, NY
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From: Kodiak, AK
hey guys. I have the TB from a 4.2 I6 that I bought for my I4 Colorado. It is quite a bit bigger. But I never installed it on my truck because I need a tune to use it.
But now that I am going to be working on my cobalt instead and use my colorado as a worktruck I want to use the TB for my Cobalt. I have a 2.2L but will be doing a lot of work to the engine including a turbo. It is a 2006 2.2L ls and I understand there isnt a good tuning program for it so will this be possible for my in any way?
But now that I am going to be working on my cobalt instead and use my colorado as a worktruck I want to use the TB for my Cobalt. I have a 2.2L but will be doing a lot of work to the engine including a turbo. It is a 2006 2.2L ls and I understand there isnt a good tuning program for it so will this be possible for my in any way?
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From: Connecticut
Not resurrecting a semi dead post, but there is a part of this that I do not understand.
A little creative thinking (for redlines its bolt and go with new coupler for cobalts a trip to home depot for a 3" PVC 90 is about it)
can someone elaborate on what the PVC is for? also can this new TB run intakes for the stock TB, i.e. the injen or fujita intakes?
and whats this spacer plate i read about, anyone have a link?
and can someone explain more on what needs to tune on it to get it to behave more like stock.
A little creative thinking (for redlines its bolt and go with new coupler for cobalts a trip to home depot for a 3" PVC 90 is about it)
can someone elaborate on what the PVC is for? also can this new TB run intakes for the stock TB, i.e. the injen or fujita intakes?
and whats this spacer plate i read about, anyone have a link?
and can someone explain more on what needs to tune on it to get it to behave more like stock.
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From: Milwaukee, WI
found more Hp tuner logs with my car running a 2.8 pulley. I was pullin 33lbs/min thru the maf..... again with this tb and a stock pulley Im pulling 30lbs/min thru the maf. big big improvement for very lil cost
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From: WI
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From: Milwaukee, WI
curious if theres any other tables that can be adjusted to correct the sensitivity of the throttle.... Be messing with tables and cant seem to get it to stop being jumpy... ive gotten used to the throttle body but others that try driving my car have issues and few other people that have this throttle body have the same problem. Any feed back would be appreciated
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From: Horseheads, NY
Witts car with the TVS had a similar issue...the car was basically undrivable in low gears. There was nothing we could do cept put the stock tb back on. Its a setting somewhere we dont have access too cause even with the original tb u can still feel the jerkiness but the tb isnt large enough to cause the car to go into convuslions like the ls4
I have no idea on what table could be causing it but my money is on its somethign we dont have control of
I have no idea on what table could be causing it but my money is on its somethign we dont have control of
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From: the glove
Witts car with the TVS had a similar issue...the car was basically undrivable in low gears. There was nothing we could do cept put the stock tb back on. Its a setting somewhere we dont have access too cause even with the original tb u can still feel the jerkiness but the tb isnt large enough to cause the car to go into convuslions like the ls4
I have no idea on what table could be causing it but my money is on its somethign we dont have control of
I have no idea on what table could be causing it but my money is on its somethign we dont have control of
