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R33 Boost Problem

jakez88

By jakez88,
in Engines & Forced Induction

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jakez88 Veteran

jakez88

Posted
Posted

i need some advice on whats happening to my car. only just bought my r33 maybe just over 2 months now and i've never really fanged it. i did it once and for some reason when i'm boosting it up (almost flooring it), after about 4,500revs there is a surge of power and boosts up more but then it starts to choke/stutter?

today i got my exhaust put in and decided to give it a good fang and the same thing happened. i would boost it up hard and all of a sudden after about 4,500revs there is a kick in the power and it boosts up more but then starts to stutter. as far as i can remember it happened in all gears from 1st to 3rd. i'll test it out tomorow again.

now i just want to know if this sounds like the ordinary stuffed coilpacks problem? or does it sound like something else? fuel pump?

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https://www.sau.com.au/forums/topic/270662-r33-boost-problem/
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Benzino33 Experienced

Benzino33

Posted
Posted

tape your coil packs up and have a go. use good electrical tape. only really need to do it around where they screw into the car. theres a thread about misfiring above 4500rpms,, i used to hav that problem and now it redlines with no problems

ceejay77 Newbie

ceejay77

Posted
Posted
tape your coil packs up and have a go. use good electrical tape. only really need to do it around where they screw into the car. theres a thread about misfiring above 4500rpms,, i used to hav that problem and now it redlines with no problems

thanks for info will try taping the coils not sure how that would fix it but worth a try if it has fixed yours.

Jmaac Proficient

Jmaac

Posted
Posted

vvt switch point, change your plugs first or regap. if it continues to missfire at high rpm then buy some second hand coil packs and switch them in/out until it stops happening (or just buy some splitfires). tape wont work (poor insulator of heat)... possibly better than nothing

ahh 33 s2 Mentor

ahh 33 s2

Posted
Posted

the reason it boost harder after 4500 is coz its a standard dual stage boost solenoid they all boost harder after 4500, the stuttering and coffing is coil pack related. also search for a thread that over rides the second boost kick for full boost from go to wo.

jakez88 Veteran

jakez88

Posted
  • Author
Posted (edited)

^^shit didn't ahve a clue about that. i'm coming from owning 2 32s so have no idea. thanks heaps

someone show me this thread about getting full boost!

Edited by jakez88
mosquitocoils Veteran

mosquitocoils

Posted
Posted

As the previous poster mentioned, your car has a two-stage boost controller as a stock item. It regulates that boost will go up to 5psi at around 3000rpm, and then once you reach around 4500rpm upwards, the boost climbs to 7-8psi.

For reference's sake, I've seen mine get to about 7.5-8psi when I get close to redlining in 3rd gear coming onto the highway.

If you were to install a manual boost controller (like a turbosmart, or gfb as examples) this takes the place of the stock boost controller and sets a maximum boost as set by you when adjusting the new controller. Up to around 10psi is considered safe with stock internals and turbo.

Unfortunately I can't help with the misfire problem, but as others have stated have a look on these forums, I have seen a stickied thread relating to it.

geraus Mentor

geraus

Posted
Posted

Get a turbotech manual boost tee, there on ebay about 40$, They hold boost pretty good. Mine use to hold up to 10-12psi on stock turbo with full exhaust and front mount. Get that and when you connect it, dissconnect your stock boost solenoid.

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