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I had a mines ecu in my gtr left the boost restrictor in till I removed it and never had issues, the issue with them is they run lots of timming and rich and are tunned for 100ron, but the stock ecu is fine if Nissan didn't want us removing the boost restrictor then they would of hidden it better and not painted a yellow strip around it, if you don't know what detonation sounds like or how to read your plugs or check base timming then I would be leaving it to a mechanic who does

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Yes, that makes perfect sense. I could have figured that out myself, Always good to hear it from others though.

No issues with the Mechanics side of things, More of the what to do and what not to do. ( Former All Holden guy... )

So, an aftermarket ecu and a good Dyno tune wouldnt hurt. Any excuse to do more Mods.. =D

Edited by CaptainFresh

I had a mines ecu in my gtr left the boost restrictor in till I removed it and never had issues, the issue with them is they run lots of timming and rich and are tunned for 100ron, but the stock ecu is fine if Nissan didn't want us removing the boost restrictor then they would of hidden it better and not painted a yellow strip around it, if you don't know what detonation sounds like or how to read your plugs or check base timming then I would be leaving it to a mechanic who does

yes it was designed to be taken out!! When using 100ron fuel, which only very few United servos have and nobody else. On 98 it hurts engines

My 32GTR had a catback and nipple removed to net 1bar boost everything else stock.

Factory setting for base timing @20deg was fine with 98 octane so long as it was 22deg or colder outside!

Pulled very hard but I noticed temps over 22deg outside the factory ecu would pull timing as it prolly detected light detonation.

But on hot days I wouldn't be belting a gtr anyway.

So you could do the above std setup being mindful of fuel Ron and weather or turn base ign timing down via cas to maybe 17 or 15deg and have a laggy pig no matter what weather or fuel used.

Run no. 7 heat range plugs too that also lower temps avoiding detonation.

Edited by mr skidz

As others have said in the thread, mild steel will give you a deeper sound without the tinny rice boy Hyundai sound that so many titanium and stainless setups produce. Forget the look, people don't see under your car anyway. Just use a stainless or titanium end muffler and it'll look the same anyway.

Love my custom mild steel system. Deep and never droney, but thanks to my special cat it rasps when you're up high in the rev range. Best of both worlds.

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