timbolandd

thinking about upgrading to like a 880cc injector. i want power but driveability

StanB

See RC's site for a formula to do the calculation. 450cc are rated at about 280 HP. However, I've read statements that some people have used them for 300+ HP. The 880cc are rated at about 600 HP. I've read mix reviews/information about the 880cc. Some people say it's hard to get the car to idle with them while others have stated they had no problem, and their cars idle like stock.

FYI...use the "SEARCH FEATURE" it will do wonders for you.

BoostedBSeries

xenocron made 300 whp on his own car with them at 101%duty cyle, aka, OPEN. 270ish HP is about max if you wanna stay safe

USS

Depends on fuel pressure and what % duty cycle you like to be at, but 250-300 is about where they max out (as stated below)

Zeusfire69

Altitude plays a role as well.

Bizzar

I made 297 on a dyno dynamics (read that as 317ish dynojet). 90% duty cycle on Crome with room to go. I actualy needed to take some fuel out. Stock fuel pressure btw. I didnt re-tune it as it was just a see what you do dyno day, not an actual dyno tuning session. My a/f was off the chart at 20psi and dangerously rich 9:1 a/f. Altitude was pretty low I would guess as I am in FL but it was a pretty hot day.

FooK

with a walbro and stock fuel pressure 300 seems to be that max out mark.

JD Racing

450 cc 260 whp at 85% duty cycle at 45 psi fuel pressur
880 cc 500 whp at 85% duty cycle at 45 psi fuel pressur