boosted 420a backfire

[sickasssteve]

i have a hanhs port fueler and a full turbo kit on a 420a with a shop tune but i keep gettin what seems like a fuel cut and a bad backfire i replaced the plugs and coil pack no boost leak and im still getting boost a vacuum im pritty stumped and i have not the fuel pump yet cause it just started happening and i wanted to rule out the simple stuff first. any one else have this problem?

 

[bo0st]

Do you have the cat still on or was it removed from the exhaust?

 

[sickasssteve]

the cat has been removed i ended up fixing the problem it was a spark issue

 

[sickasssteve]

ok i got a boosted 420a i dont know if anyone read my past thread my car is far from stock and im haveing huge issues with thes spark or maybe its the fuel let me tell u a little abt the car its a 420 a forged internals catless 3 inch exhaust tubronetics evo 2 wastegate greddy turbo greddy type s bov worborl 255 fuel pump hanhs port fuler msd box msd tact addapter everything to make my turbo kit work (i know my spelling sucks)

my problem-
the car starts idles fine but when u start driveing it i have a huge back fire from the exhaust and then it struggles to stay idleing i despretly need help this is not the first time i had this issue last time it was the wireing and im looking for a more perminate fix

should i maybe revert it to N/A

pls help

 

[99 gs iowa]

ok i got a boosted 420a i dont know if anyone read my past thread my car is far from stock and im haveing huge issues with thes spark or maybe its the fuel let me tell u a little abt the car its a 420 a forged internals catless 3 inch exhaust tubronetics evo 2 wastegate greddy turbo greddy type s bov worborl 255 fuel pump hanhs port fuler msd box msd tact addapter everything to make my turbo kit work (i know my spelling sucks)

my problem-
the car starts idles fine but when u start driveing it i have a huge back fire from the exhaust and then it struggles to stay idleing i despretly need help this is not the first time i had this issue last time it was the wireing and im looking for a more perminate fix

should i maybe revert it to N/A

pls help

### are you doing as far as tuning?
fuel set up?

 

[JusMX141]

You didn't need to create an entire new thread for the same issue. Merged.

 

[sickasssteve]

thanks new to the form

 

[rough]

I noticed you didn't mention ECM, our ecm's are not for boost, you would wan't an ecm out of a gst 98/99 that has eprom. I've never used the port fueler but from reading about it looks like it just changes fuel related, could be not enough boost/air going into the motor causing a very rich condition.

 

[sickasssteve]

it was running fine for awhile this just stared again and im pritty upset abt it

 

[mantega4g63]

I noticed you didn't mention ECM, our ecm's are not for boost, you would wan't an ecm out of a gst 98/99 that has eprom. I've never used the port fueler but from reading about it looks like it just changes fuel related, could be not enough boost/air going into the motor causing a very rich condition.

Please try not to spread misinformation, the 98/99 ecus are the computers able to be flashed with evoscan. the 95 ecus are the ecus which are able to be socketed with a chip and tuned that route...

Is your bov recirculated? check for boost leaks, vacuum leaks, exhaust leaks
do a compression test on your motor, if you think it's spark and fuel related a compression test will tell you how able your motor is to compress the gases from the fuel and spark mixture and turn it into mechanical energy

if you have any more info on what happens with the car or what makes it act up feel free to post

 

[psycho]

Please try not to spread misinformation, the 98/99 ecus are the computers able to be flashed with evoscan. the 95 ecus are the ecus which are able to be socketed with a chip and tuned that route...

Is your bov recirculated? check for boost leaks, vacuum leaks, exhaust leaks
do a compression test on your motor, if you think it's spark and fuel related a compression test will tell you how able your motor is to compress the gases from the fuel and spark mixture and turn it into mechanical energy

if you have any more info on what happens with the car or what makes it act up feel free to post

Same goes for you Chief. He owns a 420a and the thread is tagged as such. He can't use a turbo ecu and doesn't need his bov recirculated. Everything after that point is relevant however.

 

[sickasssteve]

new info- if i take off the and reconnect the battery it runs PERFECT for abt 10 miles and then the check engine light comes on and it starts sputtering and backfiring some one pls help

its blowing 4 codes m.a.p. /O2/ coilpack/misfire once i get all fixed ill let you know what happens

 

[sickasssteve]

just put on a new m.a.p. snensor no luck but getting better i hope could an o2 sensor cause that?

 

[sickasssteve]

problem solved ... for now did new plugs wires o2 sensor colder plugs and basicly rewired the whole coil pack to work off of a switch in cabin now its been abt 40 miles and running like a champ

 

[cl1ckclack]

Wow... Please learn how to spell, and use punctuation before you post in this forum anymore.

 

[GSTurbo1]

You need megasquirt standalone

 

[JDT]

I'm wondering if you were ever running a FCD, as I'm pretty sure the Portfueler doesn't have any control over the MAP sensor like MSns does.


Someone please correct me if I'm wrong.