08-26-2007, 06:46 PM
Join Date: Dec 2004
Total Cats: 1
New wastegate actuator with great results
Just incase you guys didn't catch my other thread, here's an update on my setup.
Greddy kit with the 15g
Spearco bar and plate intercooler
Turbo Tony 2.5" downpipe
Supra 305cc injectors
Flyin miata dual-feed fuel rail
GT28 5psi wastegate.
So, with the stock wastegate, a lot of you know that you'll loose boost at redline and that the boost isn't exactly controllable.
For my setup, I had the original wastegate and I had a manual boost controller so that I'd have 5 psi at redline. This resulted in 6-7 psi at about 5-5500 and falling off to 5 towards redline. I also had an initial 5 psi at about 3500rpm.
With the gt28 wastegate, I had to use spacers to get it all lined up, but in the end, it worked out better than I hoped. Without the boost controller, it whips up to 5 psi at 3000rpm and is SOLID to redline. So, it helped with spool and holding boost ... sounds good to me!