how come the r33 back fires?

[henzie]

hello my skyline r33 series 2 ..when i red line the car at the lights from gear 1 to 2 it back fires and orange fire comes out of the extaust ......how come it dose that? .....is there somthing wronng wif my car?

[Sl!m]

little flame isnt always bad :looney:

[henzie]

i pour pemi petrol and the car is stock it only has a hks ari fitler b.o.v and a cat bak extuast 3inch from tubo and 4inch at the bak ...and it back fires orange red kinda colour from the extust!

[TommO]

Is your cat in good condition ?

The only way flames should be coming through the exhaust is if, for whatever reason, you no longer have a cat.

Backfiring can be explained by the BOV (Which I assume is Atmopsheric?), but the flames means your exhaust ain't exactly legal...

[Moanie]

hehehe... yeah... no cat was what i was going to say! or maybe your car is running too rich!!

[d00dz]

Instead of:

meow....

it goes..

meow.....BOOOOM....

[Tommyk]

I think either your cat is dead, or you dont have one

[igor]

And if you happen to chat to the nice blokes at EPA you will probably end up with a $5000 fine. Go to an exhaust place and get them to check it out.

[benm]

Heeeere ***** ***** !

[henzie]

yeh i just went get it checked nuffffin wronng wif my cat bak and car ..the dude just said that its the fuel compestion i think i neeed a power fc ecu! how much do they cost???

too much petrol going though makes the car backfire and skyline stock ecu dectects all diffrent signals thats why i think the stock one cant handle it =/ NEed A power fc ecu ! any one know how much it cost? and where to buy it from?

[R33RWKW]

Apexi PowerFC & Hand Controller - Buy from www.Nengun.com

For R33 GTS-T series 1&2

I just bought mine for $1018.00 delivered to Melbourne,Victoria. There might be a little wait, as it will come directly from Japan & they just finished holidays over there.

I havn't seen them anywhere cheaper, unless you buy second hand. Some people on the forum might have one for sale.

Hope this helps.

Cheers, Chris

[R33RWKW]

Apexi PowerFC & Hand Controller - Buy from www.Nengun.com

For R33 GTS-T series 1&2

I just bought mine for $1018.00 delivered to Melbourne,Victoria. There might be a little wait, as it will come directly from Japan & they just finished holidays over there.

I havn't seen them anywhere cheaper, unless you buy second hand. Some people on the forum might have one for sale.

Hope this helps.

Cheers, Chris.

[[[d a n n y]]]

just look on the forums.

theres several for sale at the forsale section

[henzie]

thank you people for ur help =] cheer*

[Moanie]

yeh i just went get it checked nuffffin wronng wif my cat bak and car ..the dude just said that its the fuel compestion  i think i neeed a power fc ecu! how much do they cost???

too much petrol going though makes the car backfire and skyline stock ecu dectects all diffrent signals thats why i think the stock one cant handle it =/  NEed A power fc ecu ! any one know how much it cost? and where to buy it from?

yeah... i thought it might have been because your ar is running rich!! the excess fuel is just been released through the exhaust, and it backfires casue the fuel ignites when it hits the hot exhaust pipe and air........ or am i making all that up!

[Guest Mashrock]

i love back fire!

[Kristov]

If your car backfires does it damage the cat when it does? Also is it harmful to your exhaust or turbo?

[RB30-POWER]

Raw fuel is very bad for the CAT, it will melt and clog the cat in no time at all and you will have a restriction and loss of power.

The cat holds alot of temperature and when raw fuel hits it, it ignites and melts it.

All this will happen if you have an atmo bov, the AFM measures the air going through the BOV, thinking its going into the engine when it isn't, puts in fuel, and naturally overfuels and goes straight into the exhaust.

People don't think of this though, if they have some noise from a atmo bov for wankfactor thats all that seems to matter.

[Tosh]

1. Plumb your blow off valve back into your intake pipe. If your BOV can't be plumbed back then I would suggest you put the Standard Blow Off Valve back on the car.

2. Get a new CAT fitted. Sounds like your one is stuffed or you don't have one at all. Carline Mufflers in Gladesville can supply you a very nice, proper high flow CAT for around $500. Well worth the money.

3. Get your O2 Sensor & Injectors Cleaned. Grey Imports in Annandale is good for this.

4. Clean your Air Flow Meter by removing it and spraying the contact inside with Contact Cleaner

5. Take your car to a Nissan dealer with a Consult Computer and get them to clear the self learning memory out of the ECU. I know Hornsby and Haberfield Nissan definately have them, not sure if they all do.

That should make a fair difference for you. However as you have a higher flowing exhaust system fitted to your car it will never completely get rid of the back firing. The only way to completely get rid of it is to put the standard exhaust back on but there's no need to go that far. It will be alot better if you take the steps I've outlined above

[henzie]

thank you people for the advices i will give them a call twmor and seee ......money is no problem =] cheers people =] ^.^