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*ChrisCantSkate* · 01-23-2003, 03:43 PM

2rpms befopre fuel cutoff

nah... it depends... some engines will make power past their fuel cutoff(h22 for example) others dont (single cams usualy dont) not letting off the gas pedel will fry your clutch. shifting at peak hp is bad, you want to get past peak hp... so you can keep the rpms up. and the stock peak hp and tq is different from your car trust me. preludes dyno at 5500rpm-tq and 6800rpms-hp but on my friends dyno he peaked at 3250 for tq (flat the rest of the way... but still), and 6650 on hp. i say you go till about redline. think of it this way... just numers from my ass...
4500rpms you make 135hp
5000rpms you make 150hp
5250rpms you make 160hp
5500rpms you make 170
6000rpms you make 190hp
6250rpms you make 185
6500rpms you make 180
redline/6700 you make 175

when you shift at 6000 rpms you drop back down to 4500rpms thats 135hp... not good... but at 6700rpms you drop to 5500 and your already back at 170hp. this is very very basic, but i think you can see... you want to keep the power up as long as possible

01-23-2003, 03:43 PM	#3
ChrisCantSkate Thought Police Join Date: Aug 2001 Location: orlando florida Age: 41 Posts: 9,662	2rpms befopre fuel cutoff nah... it depends... some engines will make power past their fuel cutoff(h22 for example) others dont (single cams usualy dont) not letting off the gas pedel will fry your clutch. shifting at peak hp is bad, you want to get past peak hp... so you can keep the rpms up. and the stock peak hp and tq is different from your car trust me. preludes dyno at 5500rpm-tq and 6800rpms-hp but on my friends dyno he peaked at 3250 for tq (flat the rest of the way... but still), and 6650 on hp. i say you go till about redline. think of it this way... just numers from my ass... 4500rpms you make 135hp 5000rpms you make 150hp 5250rpms you make 160hp 5500rpms you make 170 6000rpms you make 190hp 6250rpms you make 185 6500rpms you make 180 redline/6700 you make 175 when you shift at 6000 rpms you drop back down to 4500rpms thats 135hp... not good... but at 6700rpms you drop to 5500 and your already back at 170hp. this is very very basic, but i think you can see... you want to keep the power up as long as possible __________________ Black Vtec Prelude-h22a power'd Many dreams come true, and some have silver linings. I live for my dreams and a pocket full of gold.