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Message: [QUOTE="Extended Power, post: 406189, member: 898"] Yeah that's all good with those injectors. Try a set of 285/150s and see what happens to the drive pressure. Everything will stay the same until that 45/52 psi mark, then the drive will push so hard, the up pipe bellows will blow out. This is where the gate comes in. If you put a larger housing on...the spool up will be slower...but top end will increase, and back pressure will decrease...tell me I'm wrong...anyone who has tried any turbo with different exhaust housings will know this for a fact. One thing to remember is there is still only so much hot exhaust volume at low rpm to get chit spoolin up. But once it starts...it's a frickin riot! I tried T4's before in a dual ball bearing Turbonetics turbo. Tried every exhaust housing for it under the sun. Even after some quick live tuning, it was still a 2:1 ratio for the drive to boost. (80 psi drive/40 psi boost) this was with the best responding exhaust housing for street/daily driving. Sure, if your easy on it, it was good for the street...but wot is another story of what is going to happen when pulling steep hills or track use. Until people start watching the drive pressures...I'm still unconvinced that a T4 will spool quicker then a T3. [/QUOTE]

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