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Screw under the dash?? im talking about the Stop screw on the TB itself the butterfly was still open maybe 3% when i got it and its now very slightly less and for reference i tested this on the old throttle body and it did the same thing. will keep an eye on it but all seems pretty smooth at the...

Thanks The1 and Andrew426 i noticed the stop screw was out straight away (idling at 1500RPM) dropped that back to where my old one sat RPM wise And learned all about the TPS Coasting along at 60 the Tacho would fluctuate around the 13 to 14 hundred RPM range erratically and i felt engine braking...

BTW Jonah u can get the Twin TB's for the Ecotec u need the manifold to suit

yeah Gears up about 1k too late if your giving it any go but then again its a 19yr old Box lol found if i throttle back its all good with the changes so gunna go easy till i get the Dyno Tune

i did the bellmouth the day i got the car i got a K 'n N panel Filter, extractors, High Flow Cat, 2.5" exhaust and the difference between the stock and 70mm TB was ridiculous noticed it instantly and when i boot it it goes harder than the stock TB which opened fully where the 70mm only opens...

Cheers for all the responses, i am planning on getting it tuned but am waiting on my new injectors and fuel pump before i do it It does have the IAC Valve the only reason that i dropped the rpm with the Screw is that it was physically open too far and the IAC Valve couldnt do its job - the car...

Hi Guys, I have a 93 VR which i just put a 70mm Throttle body on and need some advice on possible adjustments Just a bit of backstory, when i first put the new TB on, the engine idled at over 1500 RPM (with the old TB it sat at around 1000) so i had to adjust the close stopper so the butterfly...