Car runs like a dog 0- Need help

[Eav00l]

I dont know what the probl;em is,

when its cold i cant run it at all

it sounds like its suking sooo much air its not funny,

i have ba boost cointroller set to 8psi and 14psi,

8 psi goes harder than the 14 cause when is on 14 it just pops and farts all over the place.

also i dont think a rb25det running 8psi sould get beatn by a n/a 2001 astra.

im really starting to get shitty cause its only 3 minths old and runs like a heap of shit.

mods done

3in HKS super dragar exhaust from turbo

Turbosmart 2 stage boost controller

Water injected onto standard cooler

Fuel cut defender

Pod air filter

BOV

was wondering if there is any one in the hills district that could come and have a look at it, its wurrying me and itys a pain when you get beating by a S**T box.

R33 GTST

Late series 1

Thanx Craig

0410 635 901

[muffas 180]

Have you had a major service and tune since you bought the car? Plugs could be in bad condition so high boost will be back firing and so on. Every time i buy a car i replace every servicable item including all oils just for piece of mind.

Michael...

[Jay95R33]

Also - what type of BOV are you running?

Is it an after market one that vents into the air??

If it is, it could be adjusted too soft and is leaking...

J

[Eav00l]

yea serviced it about 3000 ago myself, i dont trust any1 else with a car like that.

Jay - yea its aftermarket, not sure what type just was sitting in my mate garage at home, how do u adjust it?

i could email you piks if you want

[GunMetalR33]

Like J said your BOV could be leaking air therefore making your AFM readings incorrect. Lots of people experience stalling issues because of this.

As for the Flat spots at high boost I'am with muffas in saying that your plugs could be F*cked or they may not be gapped for high boost (.8). Remember that the inlet cam changes it posi to increase the pull at 4500 rpm which will also be contributing to your flatties becuase the fuel fixture really get rich when this happens.

So i guess if i was you i would:

1) close after market bov, or borrow standard one?

2) Check & gap plugs

3) Wind the boost down to 12psi (R33 stock computer will perform ignition cut (what people call boost cut) any where from 11psi to 14psi depending on the particular car) I am not sure if you fuel cut defender will stop this?

4) Get SAFC to lean out A/F ratio at higher RPMS.

Hope this actually helps & iam not just full of Sh*T :-}

Good luck with it all

[Eav00l]

4) Get SAFC to lean out A/F ratio at higher RPMS

SAFC ? whats that

Plugs changes about 500kx ago and gapped correctly

[GunMetalR33]

OK, before getting a (apexi Super AFC used for adjusting A/F ratio's about $700 bucks? not sure)

Try turning your boost down to about 12psi, In most cases the standard turbo on an r33 will not run efficiently at 14 psi and may even produce less power at 14 psi. Untill you get you car dynoed at the different boost levels you wont know for sure but i would run 12 psi for now to try and resolve your flat spotting.

Also see if you can get that stock BOV to try and solve your starting issues.

If turning the boost down does not solve your problem it could be that one of your coil packs are shagged :-{, once again getting one of a mate to do some tests would be your best bet as you dont want to waist money buying coil pack (about $125 sh)...

[Eav00l]

Gun metal, thanks for the help

[Guest Robo's]

Do what GunMetal says and it will run like a rocket. Most likely the SAFC will give you the power back, well did to me when i turned up the boost.

[Eav00l]

sorry what does SAFC stanbd for

[sewid]

I say sell your car and buy an astra.

But seriously, how much research did you do before just upping the boost to 14psi on the stock cooler? Then you just chucked a BOV you had lying around on?

And now you're having problems? What did you expect?

[GunMetalR33]

What sewid means is:

The stock cooler is very un-efficient, therefore when your boost gauge says that you are at 14psi your turbo is probably (for args sake) pushing out say 16psi or maybe more!

I know a lot of people will tell you that you can run 14 psi of a stock r33 turbo and to my mind they are right, just make sure that you have a after market cooler that is reasonably efficient before doing so.

Remember: You might achieve more power by running a little less than 14psi with a stock turbo...

[sewid]

What sewid means is:

The stock cooler is very un-efficient, therefore when your boost gauge says that you are at 14psi your turbo is probably (for args sake) pushing out say 16psi or maybe more!

I know a lot of people will tell you that you can run 14 psi of a stock r33 turbo and to my mind they are right, just make sure that you have a after market cooler that is reasonably efficient before doing so.

Remember: You might achieve more power by running a little less than 14psi with a stock turbo...

Right.

The stock cooler is not going to be able to cope with 14psi. The air is therefore going to be less dense and you will not be seeing the performance you should.

To compound this, is your pod filter in a enclosure or partitioned off from the engine bay? If not then again you will be sucking in enormously hot air from the engine bay.

All of this spells hot air in the engine, meaning crap all improvement over a stock car.

[GunMetalR33]

If you talk to Jay95R33 he can sort you out with some plans for a cold air box which is very good! (I use it my self & it made a huge difference and this was in winter!)

[MRT.SUX]

take ure car to a dyno to get a/f ratio and boost readings.... maybe is ure AFM is fugged

[Eav00l]

Yea might take it to Blitz on the weekend at UAS.