Im yet to pull the trigger on one of these but very tempted. So would like some input from the guys that already have this setup on either the iwg 9180, 8374, or the hybrid 9174 for an FD. Looking to make 600 hp with great response. I have looked at turblowns blog and results for what they tested these on but nothing realy comparable to my setup. Thanks.

 

What is your current setup? Only 5 people have the cast manifolds, and I believe the first one will hit the dyno in about 10 days. However you can see results from the welded version of the turbo kit( cast should be slightly better in performance).

 

I have a to4r aspec kit. And would really like to see full boost before 4k rpms and see it hold all the way to 8.5k rpm's but really in to see those #'s to make a decision on what to go with.

 

8374 is night and day compared to a To4R kit.

I tuned a To4R FC about 8 weeks ago and it made 500rwhp, but was super laggy.

From my experience the 8374 and To4R make the same exact power below 25 psi( even though the To4R is a 66mm compressor vs the 8374 62mm). The 8374 is 1500+ rpms faster.

 

My car Hit 29PSI on my externally gated 8374 at 3750RPM. Easily the Best turbo's on the market

 

Wow thats certainly impressive! Mannykiller what A/R on the turbo and to what rpm's did you hold that power?