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Discussion Starter · #1 ·
i think somethings wrong with my b16a2 in my si because i race a gs-r on the freeway and he only have an intake and headers. i have skunk2 cams and sprockets, headers, exgaust, clutch, and right when i shift to 5th gear he just left me. i mean he was gone!!!!!!! should that suppose to happen? is it just because of the b16a tranny?
when i shift to 5th gear it seems like my car wasnt accelerating anymore. i mean it was slow. i couldnt believe it because he just blew rite by me when i did that. have that happen to any si with a b16a2 before?
 

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You need a light flyweel a chip and a fuel pressure regulator. Then you will be just fine. You have intake, exhaust and cames. But you have nothing that optimazas your fuel. And espacially with cams you need to do something to do with your fuel. So a pressure regulator would be the first thing i buy.
 

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Discussion Starter · #4 ·
im pretty sure thats what he have because i know the guy. btw, i have a b&m fuel pressure regular and it's set at 44 psi. im not really sure but i think it's the way i set my cams with the sprockets. i have skunk2 cams and sprockets so i called skunk2. i asked them have they dynoed any b16a and what was the marks. he told me to leave the intake cam at 0 and advance the exhaust cam 2 and set the fuel 44 psi. ever since i did that my car havent been running real good.
 

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Those cam settings aren't good for every Si. Since yours has other mods, you'd be better off taking it to a dyno and tweaking the cam timing.

Rev Limiter: A lighter flywheel won't help you gain any HP, especially at that slower engine acceleration in 5th gear. It will help a little at low-gear acceleration because it takes less engine power to spin it faster.
 

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dumpsi, every Si is different. I would leave the cam gears set at 0,0 until you get to the dyno for tuning. Your stock ECU has to be hurting performance too. Did you ask Skunk2 what ECU/program they recommend, and if a VAFC will be beneficial?? Good luck
 

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dumpsi said:
i think somethings wrong with my b16a2 in my si because i race a gs-r on the freeway and he only have an intake and headers. i have skunk2 cams and sprockets, headers, exgaust, clutch, and right when i shift to 5th gear he just left me. i mean he was gone!!!!!!! should that suppose to happen? is it just because of the b16a tranny?
when i shift to 5th gear it seems like my car wasnt accelerating anymore. i mean it was slow. i couldnt believe it because he just blew rite by me when i did that. have that happen to any si with a b16a2 before?
First of all, the Si tranny is hands down awesome when it’s matched up with the B16a. To get power out of the B16a you have to rev the hell out of it, and that's exactly what the tranny allows you to do.

Second, you have to understand something...Just putting mods on your car (short of bolt ons) isn't going to do much for gains. In fact it may even hurt performance without proper tuning.

When you add mods such as cams, and cam gears you MUST get your car dyno tuned properly.
With the mods you have GS-R’s should not be smoking you like you say it did.

Do your self a favor, save some money, get a Apexi VAFC, and get the thing dyno tuned. Then go race that GS-R!!!
 

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Discussion Starter · #9 ·
i was planning to dyno my cams but im planning to change my b16a to a b20/vtec, so im not going to dyno my cams until i get my b20/vtec. im also planning to get a type r ecu and i heard it really helps. do you think it will help alot?
i know the gs-r i raced shouldnt smoke me like that. i mean when i was in 4th gear it was kool. i was kinda pulling away but when i shift to 5th he was gone, so im not really sure wats wrong with my car rite now.
 
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