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Do not use the q45 90mm throttle body. It's not made for supercharged applications and the seals around the throttly axle will leak boost pressure. I've bought 3 tb's and tried before I gave up. They all leak after 0.6bars og pressure :thumbsup:

Do not use the q45 90mm throttle body. It's not made for supercharged applications and the seals around the throttly axle will leak boost pressure. I've bought 3 tb's and tried before I gave up. They all leak after 0.6bars og pressure :thumbsup:

That seems strange, as even the genuine greddy manifolds are drilled to suit them, there are 80, 90 and 100 mm anodised throttle bodies on ebay for under $300 new

My local rod shop supplied me with a machined billet number that sure looks the goods. A tad over 300 dollars from memory. and its 80 mil. It doesnt bolt directly to the greddy plenum but it wont be difficult to make it fit. :bunny:

I looked for ages for a q45 and gave up trying to find one. When you do they sell for around the 250 dollar mark anyway so I figure for the bit extra its worth it to have the new one. :thumbsup:

i think that the standard trottle body will be a restriction to make the 350rwkw in my rb so im just doin everything slowly and getting everything over a period of time all those billet ones on ebay are in chine and i can get better quality from here and its aussie made "support aussies as much as possiable" lol

pretty funny while driving a jap car haha

I used an 80mm throttle off a q45 v8, it bolted on and was half the price of a shiny billet one
i cant seem to find a q45

I've got one for sale on the Gold Coast in QLD, happy to post if you are interested shoot me off a PM.

Do not use the q45 90mm throttle body. It's not made for supercharged applications and the seals around the throttly axle will leak boost pressure. I've bought 3 tb's and tried before I gave up. They all leak after 0.6bars og pressure :)
That seems strange, as even the genuine greddy manifolds are drilled to suit them, there are 80, 90 and 100 mm anodised throttle bodies on ebay for under $300 new

I agree that does seem strange, ive used one on my car for over a year (490hp @ 1.2bar) with no issues or leak what so ever.

  • 1 month later...
hypertune ftw!!!!!

I just had a bad experience with a HYPERTUNE plenum for a EVO (real animal with well over 300awkw), awesome plenum but overpriced and required ALOT of work to fit.... and the HYPERTUNE throttle bodys are flat out junk.

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