falling on its face, ALMOST got the hiccups oWt! Options

[easternpiro1]

hey guys, i have recently been in the habit of pulling a a lagos move( )and ive been babying my car until dyno tune time... my car has emanage blue with a base map to get me by until then.

sorry if i explain too long...

my question is ive noticed that when i go WOT when i reach a certain speed/rpm the motor cuts out, as if hit fuel cut. now ive experienced this once before, and i will just say i was going way over the speed limit, but this time i was just around 80. after this, my check engine light came on, and i noticed that i couldnt get into boost (i hear it spooling but no response) it sorta felt like i had a leak somewhere.

I pull over, check my fittings, ic piping etc and everythings good. what i noticed when i turned the car back on was that the check engine light was no longer on, but it was still acting as if it wouldnt go into boost. I wait until daytime to be sure there is nothing loose, and take it for a brief run... no problems. (mind you i didnt get on it hard though)

what do you guys think caused the brief stopping of the motor? im inclined to think that it was fuel cut (due to the base tune done)

oh i forgot to mention, my wideband usually reads 10-11 even when cruising, but sometimes i hear/feel a small hickup and it will jump to 14 when cruising. i noticed now that when i accelerate, it goes from 10 to 14, (at about 4k rpm) then back down to ten. am i right in assuming that this is just a tuning hickup and wait? if not what should i check next?

again, sorry i typed so much, just wanted to be as detailed as possible for those without ADD like me, can ya help me out?

This post has been edited by easternpiro1: Oct 18, 2009 - 10:40 PM

[easternpiro1]

Lagos move? lol You mean where you properly maintain your car and have it running for more than 5yrs after you swapped it as a reliable daily driver?

1. sounds like normal fuel cut. turn the boost down or get a map clamp designed to work for map based cars.
2. sounds like your o2 sensor is not working at all. time for a new one. you'll also get a much more responsive and faster car when you fix this. this is assuming you have stock injectors installed.

YUP! thats absolutely right lagos! i dont know if u realize it, but youre my hero! lol i try to read as many of your posts as i can to learn somethin (this goes for several others) btw i appreciate u checkin up on my posts.

how can u tell that it is these issues? just curious...

a map clamp eh? i have a general understanding of them, but i have a piggyback on already (greddy emanage blue). from what i understand, a map clamp is a "hatchet" and a piggyback is a scalple (to coin a phrase lol, also would i have to be tuning when i install the clamp?

I have the stock 550cc injectors, i was told they would suffice, should i be looking into 600s?

yikes! 02 sensor...my butt hurts already... but u gotta pay to play eh? i guess the sensor went bad from running so rich... (may also explain the sulphur smell i get sometimes, may not have been just the cat converter)

Did you ever get around to trying to pull those codes?

man i couldnt get to it, i had too much crap come up and of course it decides to rain pimps and prostitutes on sunday before i went to work...