Sputtering

[Ricerboi]

When I gas it at half throttle from 2nd gear and go up to 5k it sputters bad like it bogs and backfires but it pulls smooth at full throttle. Recently got a BR7ES gapped at .28 any advice and suggestions what i can do would be nice. Im thinking it’s because i dont have a tune but it ran fine before but it was warmer

 

[fwdmaster]

When I gas it at half throttle from 2nd gear and go up to 5k it sputters bad like it bogs and backfires but it pulls smooth at full throttle.

What’s your setup?

 

[Ricerboi]

What’s your setup?

Evo3 16g, intercooler, fp exhaust manifold, downpipe, evo 8 fuel pump, hks intake.

 

[Ricerboi]

Evo3 16g, intercooler, fp exhaust manifold, downpipe, evo 8 fuel pump, hks intake.

Also no exaust at the moment just a downpipe exit

 

[arodgst]

If you replaced yoyr spark plugs, try going back and making sure the spark plug wires are pressed all the way down and seated on the coil pack. Also did you take any intercooler pipes off? Maybe boost leak testing it. That gap may be too small for that set up without proper tuning, someone can probably confirm that.

 

[dwb]

What car are you talking about? A vehicle profile would certainly help.

Do you have any sort of engine management, i.e. ECMLink? How much boost are you running? Any fuel management?
You might want to go back to the standard BPR6ES plugs. The 7's are colder and usually only needed if you're pushing big HP. I know my DSM didn't like 7's, so I switched back to 6's and it was happy again.
A few other things could contribute:
Spark plug wires
boost leak
PCV valve

 

[Ricerboi]

If you replaced yoyr spark plugs, try going back and making sure the spark plug wires are pressed all the way down and seated on the coil pack. Also did you take any intercooler pipes off? Maybe boost leak testing it. That gap may be too small for that set up without proper tuning, someone can probably confirm that.

Tried it again today…it runs fine now at any throttle position idk whats up with it. Did multiple pulls aswell

 

[Ricerboi]

What car are you talking about? A vehicle profile would certainly help.

Do you have any sort of engine management, i.e. ECMLink? How much boost are you running? Any fuel management?

Its a 1997 gst spyder with a ‘99 gst engine
And no tune atm since im saving up for a standalone ecu and idk about the fuel management all i know is i have is an evo 8 fuel pump and everything else is stock. And around 17-20psi

Thank you guys for replying tho, nice to know there’s people out there willing to help

 

[arodgst]

One more thing to check is the transistor plug. Its right next to the coil pack, could possibly be loose, if it doesn't have the "paper clip" on it to secure try putting one on if you can.

 

[Ricerboi]

One more thing to check is the transistor plug. Its right next to the coil pack, could possibly be loose, if it doesn't have the "paper clip" on it to secure try putting one on if you can.

Can you show a picture please? Where it’s exactly located im dumb

 

[arodgst]

This is the best I can do. And your not dumb, just have to know what to search for is all, but this sits on the intake manifold by the injectors i circled it in red

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[Ricerboi]

This is the best I can do. And your not dumb, just have to know what to search for is all, but this sits on the intake manifold by the injectors i circled it in red

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Ouuu i did clean that one too smh, im still learning aha, thanks lots i’ll probably jam a piece of paper or something to make it tighter

 

[arodgst]

Ouuu i did clean that one too smh, im still learning aha, thanks lots i’ll probably jam a piece of paper or something to make it tighter

Yeah make sure thats pressed down good. theres a metal clip that sits around the edge that locks it down to keep it from coming off. Ive seen some freinds bend a paper clip and use that if you don't have one.