Join Date: Apr 2002
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Re: Virtually NO back pressure
Starting at the intake...
K&N replacement filter
Helix throttle body spacer
w/ Stock manifolds
and 2-1/2" pipe.
The only time they meet is at the O2 sensor.
2 high flow cats
2 "turbo" mufflers (don't know much about these, but they sound real nice)
2 2-1/2" exhaust tips at 45degrees.
I have NO power until 2100-2200 rpm. Then it takes off and is great until about 4000 rpm (except for pulling hills in OD, which is what I was trying to fix in the first place). It's the funniest thing, I can hold my foot at a spot on the gas pedal and it will creep up to 2100rpm then all of a sudden it gets louder/deeper and starts to accelerate at about twice (or more) than what it had been, all without me moving my foot a bit. Its almost like something "opens" up at that point. Also, flooring it at low rpm seems to hurt my acceleration more than it helps. Half throttle does better at that point. Man, when I got the bronco - it would suck you back in the chair, but had little top end.
Can anyone explain this, or tell me what I can upgrade to fix it? Thanks