I was just wondering what the stock throttle body size was for an Ecotec. And what is a core? RSM Racing has a $100 core charge, is that a part of it, or some other thing?
Thanks.

apparently the stock ecotec TB sizes vary. Mine and a few other 02 ecotecs from the area measures 56mm where some peoples measure 59mm quite weird. We found that out because I had a machine shop custom making me a throttle body.

core charge is something you are charged until you send your stock TB in, which then you receive that core charge back



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is there really a 10 hp gain like they boast?

no, I dynod 3whp gain, I dynod 127.3 stock and 130.1 with this on...


it will although compliment other modifications



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hmmm...that's kind of discouraging, did you have your stock airbox in when you dynod it?

yes, I noticed an immediate change once my old rk intake went in, along with a .4 second drop on my 1/4 time



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Chris Mackinlay wrote:is there really a 10 hp gain like they boast?

Well usually when companies say a certain amount of gain, they usually mean "up to X HP". If you had a turbo car and put one on, 10+ HP is possible, it all depends on the application.

Basically, when it comes to modifying, you can't base what you do by advertised HP gains. One person can gain a different amount than another even with the same motor and modification, every car is different even if it seems the same.

As far as the throttle body goes, I noticed a slightly better pull but that was about it. I don't have any dyno numbers like Phil does. Is it worth it, depends on your future modifications. Also, velocity plays into effect and your powerband might get shifted upwards slighty because of the bigger size.



www.kronosperformance.com / 732-742-8837

you'd have more gains from a larger throttle body if you were boosted. until that point, it's not really necessary.




I was a retard, and now I'm permanently banned.

I know my best friend and I nustyle use to drive to my house (1+ hr highway) every weekend and we'd be DEAD even till about 110 (vss mod) and once I put on te TB I started pulling on him slowly around 90 and he was at my back bumper by 110, 115 with the TB on, I hope that helps better.


No we didnt drive during the day we waited till later at night to drive home 10pm or so we're owls lol



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QBE (73H 800573D 0N3) wrote:I know my best friend and I nustyle use to drive to my house (1+ hr highway) every weekend and we'd be DEAD even till about 110 (vss mod) and once I put on te TB I started pulling on him slowly around 90 and he was at my back bumper by 110, 115 with the TB on, I hope that helps better.


No we didnt drive during the day we waited till later at night to drive home 10pm or so we're owls lol

OMG EVIL VSS MOD PERFORMING STREET RACER WANNA BE THUG KIDS!!! lol j/k




I was a retard, and now I'm permanently banned.

That helps a lot, I think I'll stay away from that mod for a while.