FI AP1 or AP2
 

I hope this hasnt been asked before and i see how angry everyone gets when comparing AP1 to AP2, but i had a few questions....

Ok, a supercharger creates more power the higher the RPM right? so in theory an AP1 would preform before better given the same or close to the same supercharger/mods.

But now with a turbo wouldnt it be better to have the higher displacment S2000? and because the redline is lower you wouldnt have to get a bigger turbo to still make power at such a high RPM, meaning you could get a smaller turbo that hits full boost earlier?

Now im not sure if any of this is right what i said, but that is where you guys could hopefully help me out, im going into the airforce in less than 3 weeks and hoping to purchase an S2000 once i get to my first base, and i def want to go FI but im having problems figuing this out. Sorry if this has been asked before...


kevin

best of both worlds- Ap2 motor with an Ap1 ecu

lol that doesnt really answer my question. And there has got to be way more involved than just throwing an AP1 ECU in an AP2???

the two platforms are too similar to make a significant difference, Id base your decision off of your budget and not the differences between the two motors. Ive had a boosted AP1 and a boosted AP2, and although there is a slight difference it isnt significant enough to validate purchasing one over the other.

And pairing the AP1 ecu with the Ap2 motor gave me the benefit of the higher redline while maintaing the better low to midrange torque curve. And there wasn't "much more involved"

do you have the same sized turbo in the the AP1 and AP2? and if so, do you have dyno graphs for both?

edit: and if throwing and AP1 ecu in AP2 was so simple why doesnt everyone do it????

:iagree:
There must've been a reason why Honda limited the redline at 8k.

Dan

Piston feet traveled per second. I don't have my calcs in front of me, but it I recall the 8900 RPM redline of the AP1 had ~ same FPM traveled as the AP2 reciprocating assembly at 8400.

AP2 got its displacement increase over AP1 via stroke instead of bore, so therein is the limitation on RPM. Run a stock AP2 bottom end to the same redline as AP1 and you increase the odds of a shorter lifespan for your rods, bearings, pistons, etc.

To my knowledge of the Vortech systems (used to own one), the supercharger pulley on the AP2 is smaller (4.5" compared to 5.0"), therefore, having the same amount of boost and/or power.

Get springs and retainers on the AP2 head. Then there wont be any worries about redlining 9k+. I did :thumbup:

the AP2 stock pulley is 4.5"