[TitaniumTT]

Originally Posted by classicauto

I can't wait to see your seq. graph. The power IMO is very good for the boost and I'm thinking like others that the package is the key....power is all about how everything works together.

Truthfully though, I'm a little un-impressed with the 4000RPM numbers. My ancient T04-R slug and stock port S5 engine with low comp S4 rotors is cranking about 180whp by that point on wastegate (10psi) vs. your ~135whp. I would HOPE that stock twins, even non-seq, would be packing more punch down low. Thats not to take away from your achievement, that thing has a sexy looking graph. Also to that point though, if you were running 12-14psi non seq. you'd likely be at or surpassing my numbers by 4K.......soooo....

It's tough to get the non-sequential twins with all the sequential hardware to get to that boost level by those RPMS. @ 4k the boost really takes off though. I'm still messing around with the PID closed loop boost control. The Normal Position table seems to be the key to get good ACCURATE boost response. With the sequentials working though, I've played with them in the past on the street and at the blip of the throttle you'll hit 15psi by 2500 or less. It's crazy how quick that one Hitachi turbo spools up. I'm REALLY hoping to get the sequentials working at full tilt next Friday..... Spoke to Dave today, our next play-date is 10/09 so I should be able to get some numbers up by that night, charts a day or two later.

Originally Posted by dudemaaan

Non sequential twins with all the sequential stuff in place have horrible response compared to full non sequential and especially sequential. Years back i had poor mans non sequential and full 10psi boost was at 4k my t60-1 had 15 psi by 3700. And my t71 is slow as hell with 23 psi around 5k

I agree, all the turbulence created by all the various flappers and butterfly valves does nothing good for the response, both on the exhaust and the intake side of it. On the otherhand, when they're in place and working......... holly cripes, retarded spool. Broke the tires loose on a little odulation in 5th gear @ 60 mph on the highway.