Hey guys...

heres my question.... when in full throtle and both turbos are working... does the psi slightly drop down as you approach the redline??

 

On a stock or close-to-stock car, the boost often starts dropping after 6500 rpm to 8 psi by redline.

 

When my FD was bone stock long ago, my boost pattern was 10-8-10-8 at redline. When I upgraded the downpipe *precat* and cat-back exhaust, I got a solid 10-10.5 psi after transition to redline.

 

level7 was that with or without boost contoller

 

That was without a boost controller. With the main cat still on, I didnt spike at all, occasionally hitting 11psi on the primary and secondary before heat soak sets in. Of coarse its variable from car to car, as i have heard of people hitting higher boost with similar setups.