Skyline Is Too Loud (Never Thought I'd Say That)

[portaz]

I'm not sure in Perth but over here they are illegal on street cars, just plumb it back in and get it tuned all will be good again

[ARTZ]

At what point did i remove anything? wastegate was already hooked up to exhaust manifold, just didn't have the nipple on the pipe from the cold side of turbo routed to the wastegate to add pressure to open it, meaning it was boosting uncontrollibly and fuel cutting/backfireing when it overboosted. Hence the need for the wastegate to be hooked up so it can releive pressure, yet i'm discussing ways to silcence the wastegate noise as it's obviously noticable as external atmo gates are. You can add your opinion about the car, not about people in the thread because who the f**k cares about that.

ok so you bought the car like this, weird....I take it you got it real cheap....

anyway you have enough brains to get this far..well done, now think for a minute, how does one normally silence an exhaust noise?

[StevenCJR31]

Do as the others say . Plumback then Put a high flow cat convertor on it, that will not only make it legal but quieten it down a lot as the coppers here WILL eventually get you (plus fine)and you will end up starting a thread saying " how do I get defect notice off my car"

[iTwix]

ok so you bought the car like this, weird....I take it you got it real cheap....

anyway you have enough brains to get this far..well done, now think for a minute, how does one normally silence an exhaust noise?

indeed i did, 4k for r33 import with 80 thousand k's on the clock with every pannel straight, interior in perfect condition and a newly machined head because the stock turbo pop'd. It was sitting since 2007-2012 before previous owner worked on it again (still has 2007 rego sticker on windshield). I knew it'd be a project car and i'm slowly replacing all the parts, engine compression is spot on, no missing like some rb's, no turbo shaft play or signs of oil seeping in, only real issue is the ebay turbo (who knows how long she'll run for) which i'll replace when i get a chance. I'm obviously aware of a muffler baffle/silencer as i mentioned it before, but have no idea on what brands/products are good/effective, Or if anyone else has tryed to do it alternate ways which is why i'm asking opinions.

Do as the others say . Plumback then Put a high flow cat convertor on it, that will not only make it legal but quieten it down a lot as the coppers here WILL eventually get you (plus fine)and you will end up starting a thread saying " how do I get defect notice off my car"

Yeah i'm aware the risk it runs against the popo's and in perth they're cracking down on modified cars hard. The abundant noise is why i created the post, but as i mentioned earlier i'll take it to the exhaust shop tomorro and get a quote and revisit my options.

Edited December 9, 2013 by iTwix

[portaz]

Can u post a pic of the gate?

[iTwix]

Can u post a pic of the gate?

Sure m8.

(birds eye view)

(underneath)

[portaz]

Yep ok I see that would be crazy loud (can't get the link to work ) just go to decent exhaust shop if u want it legal otherwise if in Perth it's not an issue u could play with mufflers just for the gate I guess

[portaz]

Also looks like there was a gasket on it at one point can u see anywhere that it may have been plumbed into before u got car. ?

[boostn0199]

I still dont get why your trying overcomplicate the issue by trying to add mufflers into ur screamer when sinple solution you want sound like befre plumb it into exhuast.

[iTwix]

Also looks like there was a gasket on it at one point can u see anywhere that it may have been plumbed into before u got car. ?

No, from my understanding people usually weld a pipe up and route it back to exhaust. Very unclear on this gasket though, people also weld up pipes with silcencer in them and vent to atmo.

I still dont get why your trying overcomplicate the issue by trying to add mufflers into ur screamer when sinple solution you want sound like befre plumb it into exhuast.

welding pipes and routing stuff to me is overcomplicating as i do not have my mig anymore, Saying that it's looking like the only legit solution, just searching through all avaliable options before i chop things up though.

Edited December 9, 2013 by iTwix

[89CAL]

Yeah there would have been a gasket on the wastegate outlet flange, you can see the leftover from the old one.

Not sure where you would get a new one from. Probably whoever makes the gate

[ARTZ]

i'm sorry but this just belongs here

[Ben C34]

so just to clarify, before your waste gate was connected car was quiet.

So previously it was running a shit load more boost. Why did you connect it? To make it run less boost for any reason?

[iTwix]

so just to clarify, before your waste gate was connected car was quiet.

So previously it was running a shit load more boost. Why did you connect it? To make it run less boost for any reason?

Yeah it was overboosting, Too much air not enough fuel. stock fuel injectors couldn't keep up which caused a fuel cut at 7k rpm and backfiring/stuttering. While sounding like a rally car with antilag when it combusts in your exhaust manifold and spits flames, it's very bad econemy. Also very bad for the engine when it's boosting random psi.

Edited December 9, 2013 by iTwix

[MBS206]

so just to clarify, before your waste gate was connected car was quiet.

So previously it was running a shit load more boost. Why did you connect it? To make it run less boost for any reason?

It was quiet because what he means by "Connecting waste gate" is he put the pressure lines to it, now the waste gate opens to properly control boost, but it is venting to atmo as no one bothered to plumb it back.

My guess is that the guy bought all that stuff on ebay second hand, and the turbo was never plumbed back considering it was bought as a project after the car was purchased after it had been sitting for practically 5 years...

[533 RYC]

No, from my understanding people usually weld a pipe up and route it back to exhaust. Very unclear on this gasket though, people also weld up pipes with silcencer in them and vent to atmo.

When this is done, they are called exhaust systems. Exhaust shops do this kinda work everyday!

Seriously dude, swallow your mentioned pride & take it to an exhaust shop & get them to plumb the wastegate pipe into your down pipe. While your there, have them install a cat converter & intermediate muffler to keep the busies & the neighbours happy!

[ARTZ]

must have a seriously big spring in it if it wasnt opening before...

[ARTZ]

It was quiet because what he means by "Connecting waste gate" is he put the pressure lines to it, now the waste gate opens to properly control boost, but it is venting to atmo as no one bothered to plumb it back.

My guess is that the guy bought all that stuff on ebay second hand, and the turbo was never plumbed back considering it was bought as a project after the car was purchased after it had been sitting for practically 5 years...

yep kind of looks that way...guy buy stuff off ebay, realises it needs some major tuning and gives up on it...

please dont say its running a stock ecu....

[533 RYC]

Yeah it was overboosting, Too much air not enough fuel. stock fuel injectors couldn't keep up which caused a fuel cut at 7k rpm and backfiring/stuttering. While sounding like a rally car with antilag when it combusts in your exhaust manifold and spits flames, it's very bad econemy. Also very bad for the engine when it's boosting random psi.

this is more than likely your rev limiter, ooorrr does your ECU let it rev to 10,000RPM? That's why you have fuel cut.

[iTwix]

yep kind of looks that way...guy buy stuff off ebay, realises it needs some major tuning and gives up on it...

please dont say its running a stock ecu....

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