its cutting out when i go WOT, when i first floor it, its fine but after a couple seconds it starts to cut out. i know the fuel system is pretty maxed out with only 44lb injectors but it has never done this before. ive been running 11# for over the last month and its been great. now it starts to cut out

what should i look at first?

 

btw the wideband was at 10.0(thats the lowest it will read) when it started to cut out and leaned up to about 11.5 when i let out of it. it was breaking up really bad the whole time.

 

Dumb ? but is your fuel filter new ? pretty cheap place to start.

 

its not new but only has about 10,000 miles on it. last week i discovered my inline pump wasnt working, i have a thread about it somewhere. well it turns out the stock fuel pump wire that i had tapped wasnt cutting it on. so i tapped another gray wire that was just like the first one, came on when the key turned on and cut off a few seconds after it cut off. well it worked for a couple hours and once again quit. i had a test light so i probed those wires and the light lite up but it wasnt very bright. so i took the wires and stuck them down in a probe hole(guess thats what it is) where the fuses are under the hood. it lite the test light up very bright. the pump now makes its usual noise so i figure its working. just thought i should mention that.

 

when i had the test light in the probe hole it light up when i turned the key on and cut off when i cut it off.

 

Pull a plug and read it, gap should be in the .030-.035 range with boost IMO... Might be blowing the spark around. Lean it out at WOT too... I made the best power "safely" in the boost range at 11.2 AFR and 19.5 degrees of timing at WOT...

 

Thanks. Ill check them this weekend. Afr needs to be leaned out a lot getting into boost. Its rich. 10.0 getting into boost

 

at part throttle mind used to do the same... had to really get in the VE table and do my homework to get it straight. Still would go into the high 10's sometimes but not in the 9's like before... My LC1 read down into the 8's more than once