just installed 480cc's

Heads, valves, pistons, rods, crankshaft, etc...

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Lego
First Gear
Posts: 178
Joined: Mon Apr 20, 2009 9:44 am
Location: pierce county wa

just installed 480cc's

Post by Lego »

well i just finished installing some yellow top 480cc's and im running stock ecu.

I can only pull up to 6 Psi before it just gets too rich and is slow....
its not like i didnt know this was going to happen but hey, i thought maby the ecu could adjust and i might be alright since 440cc guys kinda are.

Is there any tricks i can do to make it not so rich? like put an air hole after the maf? not a small hole but like 3/4 or 1 inch in size and run a hose around the maf so it can run leaner?
BXSS
Fourth Gear
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Joined: Wed Jan 10, 2007 4:23 pm
Location: Bx, NY

Post by BXSS »

You can get an adjustable FPR & lower Fuel pressure a little so the ECU can keep up with fueling.

OR

You can get a piggy back.
94 Legacy SS
96 Impreza OBS
99 Impreza OBS-T
04 Sienna XLE Limited AWD
Lego
First Gear
Posts: 178
Joined: Mon Apr 20, 2009 9:44 am
Location: pierce county wa

Post by Lego »

Well i left open the recirc. valve hole on the intake, i have an hks bov so didnt matter to keep the hole open

results: not a great idle but definatly not as rich driving, still sluggish but way better than without the hole.

overall: im switching back to pinks... i got drag racing to do in 10 days

im waiting for revtronix chip then ill put my 480's back in
1992 legacy h6
1998 legacy gt sedan: for sale soon
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