Franken Hatch

Have a fullybuilt ls/vtec eg but for some reason when it hits vtec it bogs.I've checked the vtec wires,changed the vtec pressure sensor(cause it had a check engine for that),oil level is fine,vtec solinoed screen is clean . I also have a -4 steel braided line for my vtec oil feed with brass fittings does anyone think that could be the problem.

TeamNextGenChris

is cam timing correct?ignition timing correct?what ECU/map?any other CELs?
chris

hyper209

check oil .................................?

Dilly

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hyper209 &raquo;</TD></TR><TR><TD CLASS="quote">check oil .................................?</TD></TR></TABLE>

read more carefully next time...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Franken Hatch &raquo;</TD></TR><TR><TD CLASS="quote">oil level is fine</TD></TR></TABLE>

hothotpete

on my first ls/vtec build my vtec bogged because the dizzy was bad....then again, it threw a code for the dizzy...no other codes are thrown??

Mr Hammond

CEL's? Specs on the build? Tuning device used?

Franken Hatch

The timing is fine.Im using a p28 ecu with uberdata.There are no other check engine codes and i also changed the dizzy but still nothing.

The specs on the car are:
je pistons 12:1
tuner toy h beam rods
acls bearings, main and rod
blockgaurd
skunk 2 stage 2 cams
skunk 2 dual springs and retainers
forged valves
skunk 2 intake mani
power throttlebody 68mm
venom camgears
7.5 fidanza flywheel
stage 3 clucth
avid motor mounts
type r oil pump
gsr water pump and timing belt
smaller crank pulley
I'm using a 91 ls block with a 95 gsr head and tranny


Modified by Franken Hatch at 12:44 AM 10/1/2006

Mr Hammond

Did it just start doing this recently, or has it always been like this since the build and tuning?

hizroyalty

yeh its most likely a oil pressure problem..providing u checked everything else that was mentioned....

Franken Hatch

Did it just start doing this recently, or has it always been like this since the build and tuning?

Its been doing it since i built the motor.

TeamNextGenChris

do you have a stock ECU you can throw in there?
Chris

Franken Hatch

I have a stock ecu and i tried it and it still bogs at vtec.

TeamNextGenChris

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Franken Hatch &raquo;</TD></TR><TR><TD CLASS="quote">I have a stock ecu and i tried it and it still bogs at vtec.</TD></TR></TABLE>
whar ECU was it you tried.also,what map are you running with the Uberdata?
Chris

Mr Hammond

What stock ECU did you try? Usually if VTEC engages and the car bogs, then the crossover point is set way to low. Didn't your tuner say anything when the car was being tuned?

Franken Hatch

Ive tried a stock p28 and p72.The vtec was set at 5200rpms,is that to low?The tuner said it might be the -4 braided line i was using and copper fittings,so i just changed them today to a -3 line with billet fittings and still nothing.i also changed my skunk2 stage 2 cams to the stock ones just to try it out and still nothing.Running out of ideas,next will be the whole vtec soleinod.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr Hammond &raquo;</TD></TR><TR><TD CLASS="quote">What stock ECU did you try? Usually if VTEC engages and the car bogs, then the crossover point is set way to low. Didn't your tuner say anything when the car was being tuned?</TD></TR></TABLE>

kevmugen

maybe your vtec fluid is low yo!

Franken Hatch

What??

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kevmugen &raquo;</TD></TR><TR><TD CLASS="quote">maybe your vtec fluid is low yo! </TD></TR></TABLE>