Backfire

[Rj34GTT]

I got a GFB stealth FX BOV installed and noticed when i drive the car for the first 10mins it make a loud pop from the exhaust. i put my silencer back on the day before i got the BOV installed and it wasnt doing this. any help?

[davey_b2001]

sounds like it could be running a little rich. But its not a huge issue.

[R31Nismoid]

Well obviously you changed something... and that was the BOV

If you dont want it to happen put the stock one on.

If not, live with it or pay for a saf-c and some tuning

[WetGTR]

You hear an echo..........

Running rich because of the BOV.

I'd say your original one is a plump back version were this new one vent to atmo.

Your air flow meter already has sensed the air go in so it provides the fuel for that amount of air. When the air gets vented out and not back in....too much fuel and that's when you get the popping.

Even if you place the silcer back in and don't hear it, it is happening, running rich that is. Not a huge issue as it only happening at the time its venting out unless you have an air leak now from the BOV or the BOV is not sealing properly.

You'll have to check this out.

[gt-t_r34]

turn it to plumb back if you got the BOV for the right reason to hold higher boost rather than pssch . you wont have that problem.

[buggor34]

I have a R34 GTT with a HKS SSQV on it & it does the same thing, it never use to before i put the bov on. Its nothing to worry about.

[Rj34GTT]

I have a R34 GTT with a HKS SSQV on it & it does the same thing, it never use to before i put the bov on. Its nothing to worry about. 

<{POST_SNAPBACK}>

Does this only occur on the first 10-20mins of driving though. Thats what happens to mine then it dissapears.

[Mr-Toy33]

Ride the clutch a bit when changing through your gears and you'll hear it. It's due to fuel being dumped in the exhaust system as well which causes it to pop.

[buggor34]

Yep only happens for about 20 mins or so.

Does this only occur on the first 10-20mins of driving though. Thats what happens to mine then it dissapears.

<{POST_SNAPBACK}>

[bazr33]

do you have a hard and soft setting on the blow off valve?

if it is, let it idle and give it a blip, if it goes back to normal idle speed i wouldnt worry about it

if it goes below normal idle speed, ya keep turnin it hard till it stops .

it wouldnt hurt gettin someone to have a look at it too , just so you know for sure theres nuthin sus about it.

THanks

Barret

[AD4M]

sounds also like your water temp sender to the ecu might be a bit worn out

thats what tells your ecu when your motor reachs operating temp. Im pretty sure the ecu is tuned really rich for cold start??

just an idea?

Adam

[Rj34GTT]

do you have a hard and soft setting on the blow off valve?

if it is, let it idle and give it a blip, if it goes back to normal idle speed i wouldnt worry about  it

if it goes below normal idle speed, ya keep turnin it hard till it stops .

it wouldnt hurt gettin someone to have a look at it too , just so you know for sure theres nuthin sus about it.

THanks

Barret

<{POST_SNAPBACK}>

the noise seems to have gone away

i have loosened the spring though..so it is on soft