Spool time on stock cube LS1
SSU'S Vice Mod
Joined: Jul 2004
Posts: 2,391
Likes: 0
From: Hazard Co. Maryland
Faster, definately faster, anytime that you can flow more exhaust through to the turbine you're going to get it to spool faster, especially if your heads flow better in the lower RPM range. ESPECIALLY with more cubes, it'll spool sooner.
I have a turbo kit from a no longer existing sponser that I can not list (I'm sure you can figure it out) with a 67mm p-trim turbo. I heard the exhaust on this kit sucks because the pass. side exhaust passes IN FRONT of the driver side before it gets to the turbo. After having the kit bolted on for a week but not connected (dumping into atmosphere) I can definitely tell you it is restrictive as my car feels like it has 250-275rwhp. Also, the kit is known for having WAY too much back pressure.
That said, since the exhaust is small, wouldn't that spool the turbo faster than a larger exhaust? I'm told this kit will be at max boost (13-15lbs) by 3000rpm. It would make since; consider blowing into a coffee straw compared to a toilet paper roll. The coffee straw will have much more velocity than the toilet paper roll.
-Mike
That said, since the exhaust is small, wouldn't that spool the turbo faster than a larger exhaust? I'm told this kit will be at max boost (13-15lbs) by 3000rpm. It would make since; consider blowing into a coffee straw compared to a toilet paper roll. The coffee straw will have much more velocity than the toilet paper roll.
-Mike
