dcintegra88

i just finished installing a new timing belt, water pump, arp head studs, head gasket, and a turbo kit on my 98 gsr. the fuel system is a walbro 255 fuel pump, blacktop dsm 450 injectors, stock fuel filter. i went to start it and it started up fine then i let it warm up and took it for a drive but it seems like the fuel is cutting out/hesitates. so i took out all the spark plugs and they were black. replaced them with some new ones it started fine for about 1 minute then the same thing happened. pulled them out they were black. its not tuned and im running a obd1 chipped p28 from phearable and a obd2 to obd1 jumper harness. can anyone help me out on this?

civic_r87111

It's running way to rich, u can't run 450cc injectors without a tune, it'll just keep fouling the plugs from to much fuel.

dcintegra88

ok thanks! ill just have to borrow a friends ecu thats tuned so i can get it to a shop.

jdm inc

iTrader: (11)

agree with civic_r87111 you need to get it tune on some type of engine management

dcintegra88

a friend of mine has a tuned p28 for a stock gsr turbo with 550cc injectors will this work on my car till i get it to a shop?

jdm inc

iTrader: (11)

I would ask phearable for a base map to get it to the shop. You can also ask your tuner to get your a base map also.
What will you be tuning your car on?

dcintegra88

well the nearest shop from me is 3 hrs away and i wanted to get it tuned this weekend. im gonna run crome. well i guess i can give it a try and see what happens.

civic_r87111

If he has 550's and u have 450's then u will b running lean then but if u just cruise it easy then u may make it, hard to say exactly without looking at the AFR with a wideband. If I had to guess ur AFR's would be in the 17's which is getting dangerous.

dcintegra88

damn this really sucks! so you think i should give it a shot? i just dont wanna mess anything up.

jdm inc

iTrader: (11)

you should just trailer it to be on the safe side.

dcintegra88

ok. one more thing. i wanna try and get 300whp im gonna run 10 lbs. my setup is precision .63 trim, tial 38mm wastegate, drag log manifold, dsm 450 injectors, walbro 255 fuel pump. would i have to upgrade anything to achieve 300whp?

jdm inc

iTrader: (11)

you shouldnt have to upgrade anything. A lot of it is up to the tuner and what he think is safe, but 300 should be an achievable goal.

dcintegra88

well i guess i have to drive my car with my friends ecu in if i want to get it tuned. you guys think if i dont hit boost at all i should be ok?

civic_r87111

I will say stay as low in the rpms as u can and as light on the throttle as u can and u should b ok.

dcintegra88

ok thanks guys for all the help!