# My twin turbo camaro goes 10 flat 140mph

**URL:** <https://forums.speedlife.net/t/my-twin-turbo-camaro-goes-10-flat-140mph/204126>\
**Category:** PittSpeed Off Topic\
**Created:** [November 7, 2009, 3:24pm UTC](https://forums.speedlife.net/t/my-twin-turbo-camaro-goes-10-flat-140mph/204126 "2009-11-07T15:24:19Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![Orr89rocz](https://avatars.discourse-cdn.com/v4/letter/o/ac91a4/32.png) [@Orr89rocz](https://forums.speedlife.net/u/Orr89rocz)\
**Post date:** [November 8, 2009, 4:36pm UTC](https://forums.speedlife.net/t/my-twin-turbo-camaro-goes-10-flat-140mph/204126/20 "2009-11-08T16:36:08Z")

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> [@RMA'ing a drive](https://forums.speedlife.net/t/rmaing-a-drive/41535/4):
>
> ive never heard of anyone running restrictor with a MP turbo.
> 
> youre exhaust housing size is what? those might be choking it up some, and youre right 1psi isnt going to net you as much as if you were going much slower
> 
> as for oil in the intake tubes…how is your motor vented? i run -10 off each VC and a -6 from valley cover to a breather can setup

housing is a .68 a/r but its a T4 housing so its not entirely too small. Some say it is tho. I want to go with .96’s if i intend to keep boost high in the 15-17psi range. .68 is great for lower boost. But it comes in too hard and just spins tire on street. .96 may help that some.

I have 5/8" rubber lines off the valve covers into a catch can. Inside diameter is abit bigger than -10 AN i believe. I’m guessing its not venting enough and i may have too much crankcase pressure causing oil to seep through to the compressor side and into the intake pipes?

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