Jump to content
SAU Community

Fitted New Front Mount

Dunno

By Dunno,
in Engines & Forced Induction

 Share

Recommended Posts

Dunno Enthusiast

Dunno

Posted
Posted

Hey guys i just fitted FMIC to my r33 gtst but now when its starts comin onto boost it splutters for a bit and backfires (it makes a big bang) the only thing i could think off was the line from the wastegate that went to the standard intercooler pipe has no where to go now so i tried blocking it and it still does it can anyone help pls

Thanks in advance

Link to comment
https://www.sau.com.au/forums/topic/245242-fitted-new-front-mount/
Share on other sites
Dunno Enthusiast

Dunno

Posted
  • Author
Posted

its only got zorst, bov and now the fmic. ive adjusted the blow off valve its one of them turbo smart ones with the 2 trumpets.and seems better but im not 100% the police where out so i cldnt do to much and i blew one of the pipes off (scared the S#@t outta me sounded like a gun shot)

Ill take it to my mechanic 2morrow to get the nipple fitted at the moment ive blocked it does this mean that it will be +++++ boost

i also have a PFC but it hasnt been hooked up yet wld it hurt to hook that up and take it for a drive with the base map just to see what comes up?

thanks for the help :ph34r:

RBwhatever Veteran

RBwhatever

Posted
Posted

Your spluttering would've been because one of your clamps on a join wasn't done up properly, hence why it blew off. It would've been leaking out air under pressure, thus the car is adding fuel for XX amount of air, but only X is making it to the motor....thus overfueling.

And you need that hose that goes to the actuator to have a pressure signal, cos if you don't, the wastegate won't open.....

**RB2530** Proficient

**RB2530**

Posted
Posted

Hang on a minute guys...he is talking about a line from the waste gate that has no where to go!!!

The only line I can think of on the stock waste gate which just happens to be a VERY VERY IMPORTANT one...It is the actuator feedback line!!

Dood it sounds like you are hitting airflow cut because your waste gate is just not functioning at all because it is getting zero boost feedback. This is bad!! It is NOT a tuning issue, it is a functionality issue.

Dont drive your car like this (off boost is ok only if you have too). On boost you have a fair chance stuffing your turbo because atm the boost is not controlled...

You need to plumb that line back into anywhere between you compressor outlet and your throttle body...doesn't really matter where.

TTT Grand Master

TTT

Posted
Posted

LOL... if it's a skyline and it backfires, it must be afm/spark/leak/coil related.

I wonder if other people actually read this part of his post..

the line from the wastegate that went to the standard intercooler pipe has no where to go now so i tried blocking it and it still does it

:)

the above = unlimited boost.

Stock ECU R33 with unlimited boost = cough, splutter, backfire at about 11psi (well apart from **RB3530** - his one is a little special)

Adriano Grand Master

Adriano

Posted
Posted

the above = unlimited boost.

Stock ECU R33 with unlimited boost = cough, splutter, backfire at about 11psi (well apart from **RB3530** - his one is a little special)

I think you mean cough,splutter,bang as the exhaust wheel leaves the equation

RBwhatever Veteran

RBwhatever

Posted
Posted (edited)
Hang on a minute guys...he is talking about a line from the waste gate that has no where to go!!!

The only line I can think of on the stock waste gate which just happens to be a VERY VERY IMPORTANT one...It is the actuator feedback line!!

Dood it sounds like you are hitting airflow cut because your waste gate is just not functioning at all because it is getting zero boost feedback. This is bad!! It is NOT a tuning issue, it is a functionality issue.

Dont drive your car like this (off boost is ok only if you have too). On boost you have a fair chance stuffing your turbo because atm the boost is not controlled...

You need to plumb that line back into anywhere between you compressor outlet and your throttle body...doesn't really matter where.

LOL... if it's a skyline and it backfires, it must be afm/spark/leak/coil related.

I wonder if other people actually read this part of his post..

:blink:

the above = unlimited boost.

Stock ECU R33 with unlimited boost = cough, splutter, backfire at about 11psi (well apart from **RB3530** - his one is a little special)

I wonder if other people actually read this part of his post..

its only got zorst, bov and now the fmic. ive adjusted the blow off valve its one of them turbo smart ones with the 2 trumpets.and seems better but im not 100% the police where out so i cldnt do to much and i blew one of the pipes off (scared the S#@t outta me sounded like a gun shot)

Ill take it to my mechanic 2morrow to get the nipple fitted at the moment ive blocked it does this mean that it will be +++++ boost

i also have a PFC but it hasnt been hooked up yet wld it hurt to hook that up and take it for a drive with the base map just to see what comes up?

thanks for the help :D

It was a boost leak because a clamp/join wasn't properly fitted, that is why the pipe blew off.

The cough splutter backfire is from overfuelling because it's not receiving all the air that was metered.

But yes, the actuator line is an important one. Get a pressure signal to it asap to avoid turbo failure.

Edited by KeyMaker
Dunno Enthusiast

Dunno

Posted
  • Author
Posted

problem solved i got a nipple put on to the intake pipe for the actuator hose to go back on apparantly without that hose the car was basically running as much boost as it could lucky i didnt i didnt thrash it :blink:

Thanks for the help guys

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

    • joshuaho96
      Speed Sensor replacement

      By joshuaho96 · Posted

      Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
    • QB6SAGR
      Tein Circuit Master- rebuild worth it?

      By QB6SAGR · Posted

      Thanks guys,  Yeah I should at least have them dynoed, at least then I know what I've got as a starting point.  The springs on these are hard as rocks. I vaguely remember Russman saying he was going to sell the shocks to me with the rocks fitted, as he was keeping the softer springs for his new setup.  I didn't click at the time but of course that was to let me know the shock/spring wouldn't be matched.  I also remember pricing up new springs around 2014-15, but, house, money etc. it never happened. So that was another reason to have them rebuilt. I have rebuilt the forks on many motorcycles so I think I could handle the seals on these easily enough, but getting the valving right would be a rabbit hole I cbf exploring.  Duncan, interesting to hear RP was tuning these back then. I might give them a call.  In the mean time I have been busy fitting sway bars. The Whiteline rear sway bar I purchased 15 years ago finally got fitted, along with the Whiteline front bar that showed up last week. Just waiting on new links for the front sway bar to finish that off.  And my spare set of advan AVS VS5's should be back from the powder coaters in a Pearl White finish sometime this week, with a set of Hankook RS4's lined up for fitting.  And then I just have all the suspension bushes to do. A comprehensive kit is on the way... Lots to do before the Ararat hill climb. Cheers guys 🍻   
    • funkymonkey
      Howdy Y'all

      By funkymonkey · Posted

      Nice car! I’m glad folks in the US have gotten past the FnF and are buying real cool cars like the 260RS I was with a bunch of mates in Portland about a year ago and spotted a green Stagea (just a regular 2.5T AWD) parked about 2 blocks away and they were like “a what?” So I made a bet with them for a round of beers and said “ok one of you run down there and tell me if the steering wheel is on the correct side” 5 mins later the American comes trudging back up the hill and goes “he’s right guys. Ok what beer do you want?”
    • Dose Pipe Sutututu
      Starting again

      By Dose Pipe Sutututu · Posted

      Should replace OR drop the tank, give it's good clean. Might be worth replacing that entire fuel level/pump/cradle thing with this: https://frenchysperformancegarage.com/products/fpg-s13-180sx-r32gtst-single-pump-hanger-kit-billet-hat-6-v3-fpg-089?gQT=2  
    • R33_Guy
      Speed Sensor replacement

      By R33_Guy · Posted

      Thank you so much for the help
×
×
  • Create New...