Huston, We Have A Problem

[STIVS6]

Hey Guys,

My car seems to idle fine (albeit a little high, but not concerned) but my car is not really running as well as I thought it would.

If revved up, and the throttle is let go, the car will stall. Boost gauge gets to around 3psi, and no more (vacuum leak?).

The car is an auto, has a blitz BOV and t3/t4 hybrid turbo with FMIC.

Is it that I just haven't retuned the car? Or should it run slightly better anyway?

[NZM.031]

check the turbo hot pipe to the front mount, quite often the corner hose that goes through the guard cuts on the inside and you cant see it.

[Cjmartz2k]

1. It's Houston, not Huston

2. Is you BOV recirculated?

3. You put a T3/T4 style hybrid turbo on your car and you haven't tuned it yet?

[R31Nismoid]

Huston we indeed have a problem - the owner

Put the stock BOV back on there

Check for VAC leaks

Get it tuned

About all there is too it

[NZM.031]

hey... ease up... i had a t3/t4 jobby on my rb25 and gave it a rough tune... it worked well enough.. i used a safc 2, a big fuel pump and pressure reg to pump as much fuel as the stock injectors could handle... then leaned it out with more boost.. dodgy as fu(k i know... but it worked... and the car is still running, somewhere... the turbo let go though.

[STIVS6]

Crikey! I didn't realize skyline forum dwellers could be as bad as VN owners on the Street Commodores forum. But Nismoid, that was uncalled for, and a little unfair. Perhaps even just plain f**king rude. I have the engine in my VS, the car in a million peices and I can't just take it to get tuned until the thing is roadworthy. I don't have a factory bov, the halfcut I got never came with one! Always check your purchase out hey?! I didn't realize this was a spelling police forum either!

NZM.031 - I dont have the problems with the guards and piping, but I think you guys may be on to something with vacuum leaks, they are so ongoing! Can you get aftermarket plumb back blow off valve to suit the same flange as the blitz?

I do have an 044 external pump and a large pick up pump. Surge tank and rising rate reg. Is there any vacuum lines I need to be carefull of? Things easy to miss?

[R31Nismoid]

Well next time search and find the solution to your problems if you dont like being told how to fix it.

(and i say that because its common as common gets)

[STIVS6]

Oh, I appreciate the help, but I don't know what common problems are with rb's I never owned one, and wouldn't know the problem was common to search.

[femno]

...ANYWAYS...

What engine is it? Standard ECU?

High idle usually means an air leak.

The stalling after revving will most likely be the BOV.

If you rev it less does it still stall, or does it run really shit with black smoke out the zorst?

[NZM.031]

i didnt realise the engine was in a vs... why would you desicrate an rb engine by putting in a commodore?? thats a terrible act.

[STIVS6]

Half a million VLs cant be wrong lol.... nah.

Better than it going in a another VL (leh) lol, or it being put in a 240z and desicrating that (whats wrong with the L series engines anyway? ).

Just mating a nice engine with a nice body. Seen worst acts in skylines anyways...

It doesn't blow too much black smoke, only when revved up, and from the smell, I am 99% sure its unburnt fuel. And it doesnt really run to shit, pretty smooth, and doesn't stall when revved lower.

So BOV? Can I block it off and give that a run, or do I really need a plumb back to do diog? I will get it tuned, but I wont the nagging issues that I may have missed sorted first. SO, just looking at things I may have missed before hand first.

[joeyjoejoejuniorshabadoo]

get some detergent and water in a spray bottle and apply liberally to all piping.... then rev car... you should be able to see any leaks clearly.

black smoke is fuel... and nissan stock ecu's are fairly rich

bov-wise.... if its stalling, then you need it plumbed back...

[STIVS6]

get some detergent and water in a spray bottle and apply liberally to all piping.... then rev car... you should be able to see any leaks clearly.

black smoke is fuel... and nissan stock ecu's are fairly rich

bov-wise.... if its stalling, then you need it plumbed back...

Thanks mate, you have helped alot already, I owe ya big time. I knew the smoke was fuel, you can smell it, but i don't want to turn down the reg lol.

[R31Nismoid]

Missed that part - put the factory reg back on there if you dont need injector headroom

just another thing that can go wrong that if it isnt required - stock is fine.

FYI - i ran 350rwkw using a factory reg, as have countless others that made even more

[STIVS6]

I have an aftermarket one on as it was easier to fit the fuel lines. I have it set to stock levels though, but will keep an eye on it. I will take a look at the suggestion made today, and let you guys know how I go. Cheers!

[Ryan180]

Replace all vacuum lines even if you think they are in good nick. (they are cheap).

Try it, you will be amazed at the difference it makes.

I recently tried this on my Stag! helped Immensely.

Good luck!!