I've read the pulleys do more harm than good... I'll dig it up later lol
I hear you. But, I have the NST pulley (15% overdrive alternator) that are supposed to be for supercharge application.hahahah the nst pullies are why your not making around 290ish on the dynojet.
full tune with flashpro, even without changing your exhaust would have given you 290ish on a dynojet with the skunk2 header and stock pullies.
ps. throttle body spacers don't work for SC. they only add hp for NA.
Is this what you have?I've read the same theory with respecto to harm to the engine, but never until now with respect to performance. Hope you can find that reading that you mention.
6. Can I use the Underdrive Crank Kit on my supercharged K20?
A. The NST K20 Kit, NST22015K, is designed for use with any naturally aspirated or turbocharged application. Underdriving (slowing down) a supercharger is not ideal, because a supercharger is basically a pump driven by a belt that is attached to the crank pulley. An underdrive crank pulley would lead to less boost. We have designed what we call the CR-Lite Crank Pulley, NST22000, for you supercharger owners. You can add our Alternator Pulley, NST22022, for further weight reduction and better overall alternator output at idle.
Both available at NST - NonStopTuning - The Leader In Civic Si K20 Pulleys
Is this what you have?
I have the CR-Lite Crank Pulley.
However, I'll put back the OEM pulleys and go back to the dyno.
I just remeber my first time at the Dyno the car with A/F ratio of low 10s put down at the wheels 266hp (with OEM pulleys). I only had Hondta reflash (not custom tuning) with Greddy Evo" exhaust and Strupp header.
The 2 times after changing pulleys the car achieve 272whp (with iced-cold engine) and 268whp hot engine.
Now, with better A/F ratio reading (high 11s) and better exhaust/header, bored TB, TSX intake cam, it seems what is holding me back are the pulleys.
I just told the tuner about it, and he said that sometimes cars (Honda) do not performed well with aftermarket pulleys. I hope so, so it will help me (and make me happy) and help others in the future.