What I am getting presently recommended as the fastest spooling Holset for 500whp is a 7-blade HX35 compressor with the 0.63 A/R undivided T3 exhaust. Anyone run this combo?How would an undivided 0.63 A/R spool faster than the 12cm dual scroll? Seems counterintuitive but if it works it...
Thank you for the detailed responses. I guess that was not really the answer I wanted to hear about the HX35/40. What I was looking for was the fastest spooling 500whp solution so it sounds like a straight up HX35 would be better. I also really don't want to go over a peak of 30psi of boost...
No DSM here but this forum seems full of useful relevant knowledge. I have a '91 MR2 with a 2nd gen 3SGTE. For years I had a Garrett GT3271 on the car using a tubular divided manifold. Spool was very fast with this turbo and I had it pretty much maxed out at 25psi and 400whp.The turbo was...