shortyz

shows what kinda power FMU's make..

there pieces of ----. as everyone sez, your were way rich at the top end..

Boost n Ls

thanks guys for the tips and advice, I'm definetly lookin for somthin more manageable, the hack is my next option. Like i said This was just a little toy i was messin with, a way to learn first hand about FI hondas. What about those greddy fcu's? if i ran that minus the fmu, will I at least get a better a/f ratio readin on the top end?

shortyz

instead of spending money on a half *** system pick up a hondata s200 or something..

there not that pricy. and the best

Dr.Boost

Not that pricey?

http://hondata.com/s200.html

$295 for the base s200
$200 for the boost option
$200 for datalogging
$200 for ROM editor V3
$180 for programmer
-------------------------
$1075 and that's without the launch control, G sensor, and the Romulator which would bring the grand total up to $1630! That's a bit pricey if you ask me. Well worth it, but pricey.
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Boost n Ls

I call that pricey...

baldur

Yeah, by installing an FMU you're taking the fuel control out of the hands of a computer and putting a mechanical diaphram in charge. A very crude control, a friend of mine has an fmu on his car and under certain part-throttle conditions it spews smoke like a diesel, but is way lean at WOT.

Piggy back computers are pretty good for slight adjustments, but they tend to be a bit crude too. For every bit of AFR correction they do, the ECU will knock up the spark advance because it thinks the engine is under more or less load. (less load if you're running larger injectors) This then has to be compensated for with ignition trigger signal mangling. Plus, ECUs only take a certain amount of ------- with them, before they go out of their load maps or show the "change engine" light.

Doofnoil

I thought you could put a bleeder valve to the vac source on an fmu to lean out the mixture?

T-RO

I've got a VAFC for sale if you go the Hack route.

GimpyCivic

Buy an S200 if you feel like being light in the wallet? Just get on pgmfi.org like and get with the program!!! Literally!

Boost n Ls

Well, i got some good news. I dunno if any of you guys run this in year internal wastegated turbos, you know how the vacum line off the side of the compressor that's hooked to the wastegate? well, i plugged that nipple of the compressor and ran a different vaccum source to my wastegate. tee'd off the brake booster line directly to the wastegate. Man it made a huge difference. I mean I spool so much quiker and I held boost at 8 psi all the way to redline, were b4 it died out around 5k due to running rich. Also next weekend, i'm ditching the fmu and going with the 450cc and a programmed boost chip. I've seen it do wonders to Jon's car at the drop shop, put out 250hp at 10 psi with his Ls hatch. he will tune mine next week..and i'll keep ya posted