83Stang5.0

I maxed out my old 89 civic with intake and 4-2-1 and 3" pipes at 130. Stock ECU, My rev limiter was like 10 stock. You must be confused.

1rude2l

First of all, a stock 89 civic will never get close to 130, or 10,000 rpm. I laughed at the 10k stock.
Fabrik8 could be right but i know a stock p28 cuts off at 115, kills the fuel. 96 civic hx same thing. p06 ecu, 92 prelude with h23, all cut out at 115. The car could go faster but the ecu takes the fuel. All you get is a bogging sound until about 110 or so then the ecu brings the motor back.

Fabrik8

Might be hitting a gear-specific rev limit, that would do it too.

I don't even remember anymore, we used to just knock the limiter up to the max on all the programs we modified, regardless of what the stock limiter was set for. It's been years since I've hand-edited Honda ECU programs.

1rude2l

Either way a chipped ecu usually does away with the top speed limiter. Get a chipped p28 and a tune and you would be set.

Fabrik8

If he still has the GSR intake, he'll need a P72 for the IAB control on the secondary intake runners.

ryanherington

This dude knows his shit. Listen to him. +rep

streetlamp

Fabrik8 is a pretty smart guy, I would listen to any advice he has.


And where are you going 120mph if its not on public roads, I know its not at a drag strip.

83Stang5.0

I'm finishing up my OBD 0-1/mpfi conversion, tryn?

1rude2l

Can you bypass those like on the h22? I know irrevelant to the post, just wondering.

SortaFlush

You can remove them or, you could switch out intake manifolds to an EDELBROCK or something equivalent, I always hated the butterfly setup. But, yes you can bypass them. Just get your p28 chipped!