Jump to content
SAU Community

Backfiring issues?

immortal
 Share

Recommended Posts

immortal Apprentice

immortal

Posted
Posted

Hi All,

I have an R33 GTST series 1, and recently had fitted an aftermarket 3" exhaust system from the turbo back. very happy with the extra power and noise, however theres an issue im having. Because the exhaust is louder, often when changing gears I will hear a loudish POP noise come form the engne ... backfire i assume? However thats not my issue .. i dont mind it so much - i can lvie with the odd pop sound ... the issue is, often when accellerating hard (in say second gear) when the car gets to 4000+ rpm it will often either .... start to backfire and loose power/boost ... OR it will continue to boost/accelerate, but with constant popping/banging noises throught the revs until I change gears again.

Can anyone suggest what needs to be done to have this fixed? I dont know a lot about engines. Im guessing perhaps just a good tune from a performance shop?

Any help would be apreciated - Thanks

Link to comment
Share on other sites
TokyoTaxi Veteran

TokyoTaxi

Posted
Posted

I had a similar thing happen in my HR31 when I fitted the exhaust. I would suggest checking the spark plugs and if OK, reduce the gaps to 0.9mm and while you're there, check the condition of the coil packs very carefully ( replace as required ) . Then check your boost pressure, base timing and AFR's if possible.

Hope that helps / works. ;)

Link to comment
Share on other sites
LANFOH Experienced

LANFOH

Posted
Posted

If you cant check them your self, get some one to check your spark plugs and coil packs this would probably be the main cause of your misfire. My guess would be that one of your coil packs have packed it in.

Link to comment
Share on other sites
ECR033 Mentor

ECR033

Posted
Posted
this topic being covered many times..

even solutions to solve it

if ppl get off their lazy ass and do a search...

Seriously, give him a break mate.

Whilst I'm all for using the search function, he mentioned that he didn't know much about cars, so he probably doesn't know what to search. There's no need to be sarcastic about it, all you needed to do was point him in the right direction as you did in your first post ;)

immortal, have a read through this thread - it should help you out.

Link to comment
Share on other sites
MYSTR33 Proficient

MYSTR33

Posted
Posted
Seriously, give him a break mate.

Whilst I'm all for using the search function, he mentioned that he didn't know much about cars, so he probably doesn't know what to search. There's no need to be sarcastic about it, all you needed to do was point him in the right direction as you did in your first post ;)

immortal, have a read through this thread - it should help you out.

YOU SSHH :kick: lol

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • XoRoKu
      R32 GTR fuel gauge not working despite fixing fuel level sender

      By XoRoKu · Posted

      Opened up the cluster to inspect the gauge itself for signs of damage and it looks good. Got curious since that needle doesn't go back to a "neutral" position by itself (it stays in the same position when ignition is off. so I manually moved it to 1/2. Connected it back, turned on the ignition and the needle started moving up! Not sure what's up with that but before that the needle was way down below empty like fully south west. There's always a chance that the needle moved slightly the first time I tried and I didn't notice because of how slowly it moves and how far it was from the markings. I don't know if the current needle position is accurate so I'll fill it up and see where that brings it. I guess I'll try to adjust it manually if it doesn't get to F. Looks like the needle position is relative and not absolute? Thanks all for your help and patience!
    • GTSBoy
      rb20de neo +t conversion - boost pressure sensor needed?

      By GTSBoy · Posted

      You're confusing two different responders and more than one issue. The stock Neo ECU boost sensor is used by the ECU for protection purposes. It is essentially only an overboost sensor. It is not used for determining engine load for fuelling or ignition purposes. That task falls solely to the AFM. Any aftermarket ECU that either has an onboard MAP sensor or a plug in one, will use the MAP sensor as the primary load sensor. Or I should perhaps say "can", rather than "will", because some of them have the option of using other primary load sensors. That MAP sensor is not for the same function as the stock Neo boost sensor. The reason I recommended against a plug and play ECU is that they are intended to run a particular engine and usually in the car that the particular engine came in. So, if you have a transplanted engine in a different car, with some parts of the original missing (such as the boost sensor, for example) and therefore likely non-standardness of the loom and its insertion into the car's loom, then it is very likely that you will run into the same problems with needing to fix up wiring to make it work that you would with the stock ECU. And, if doing so for the stock ECU is enough of an obstacle that you start considering a standalone plugin as a solution, it should become clear that the plugin is quite possibly not the solution you'd hope it to be. It would just lead to more of the same type of problem solving work to get it going. In the above paragraph and in my earlier post, the lack of the boost sensor is not critical. It was just used as an example of something that we knew you did not have right, such that the stock ECU would not work. I took that as an indicator of a reasonable probability that there were other related problems hiding there.
    • GTSBoy
      R32 GTR fuel gauge not working despite fixing fuel level sender

      By GTSBoy · Posted

      I can think of two places in my city of <1.5million population that specialise in automotive instrument repairs.Unless you're out in the wilds of Quebec, you have 3 major Canadian and 3 major US cities within the same distance as the single nearest city to mine. Surely there is somewhere you could send it.
    • TurboTapin
      Can anyone shed some insight on this Turbo?

      By TurboTapin · Posted

      I never cared for twins but whenever these conversations came up, I always presumed the higher number represented a larger turbo. Learn something new everyday. 
    • joshuaho96
      how do i install this 3 port mac valve for boost control?

      By joshuaho96 · Posted

      Interesting, I've never seen a failure like that before but with the age of these cars and the general questionable-ness of all kinds of parts these days you can't rule anything out I suppose. Boost leak testing the boost control system would've revealed this though.
×
×
  • Create New...