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View Full Version : VT SS running rich with pod filter



alexs
21-01-2008, 02:21 PM
Hey guys i put a pod filter on my VT SS II and its running rich,
is there anything i can do to stop this besides a re tune because i got it tuned not too long ago.

If there is nothing else how much would a re tune cost?

Thanks for all the help again!!!

bpm
21-01-2008, 02:28 PM
if you didnt plug your intake temp sensor back in it will be running rich

alexs
21-01-2008, 02:29 PM
Yes it is, is there even any reason it would be running rich with a pod filter?

VX2VESS
21-01-2008, 03:12 PM
what sort of tune was it?

how do you know its rich now?

8throttlebodies
21-01-2008, 03:45 PM
also, speak to your tuner, if he is any good, the cost will be minimal for a touch up to the existing tune..

8tb

VNV8
21-01-2008, 03:54 PM
what makes you think its running rich? what did you have in the intake system before the pod filter (i.e. what was on it when the tune was done)?

alexs
21-01-2008, 07:14 PM
It had a larger MAF pipe and I had a moded air box with k and n panel filter in it.
Ive noticed it takes longer to red line also.

HRT 8
21-01-2008, 07:44 PM
Gives us a bit more info to diagnose.
Your question as it stands is a bit like how long is a piece of string.

What sort of pod filter. Its location and any type of heat sheilding.

Why do you THINK its running rich, or should I say how do you KNOW its running rich?

VNV8
22-01-2008, 04:57 AM
well if the pod filter had any effect (doubtful)it would have slightly higher flow/less restriction, PROVIDED it is a decent type/brand and is fitted properly, i a good position, and with a decent intake pipe etc. this would mean your engine would be running slightly lean if anything, but not lean enough to make any noticeable difference IMO. maybe put the old intake system on and see if it still has the same symptoms you havent described, regardless id guess it has nothing to do with the filter itself, provided it meets the above requirements.

and to add to the list of posts, what makes you think it is running rich? more emissions (stronger smell from the tail pipe, particularly when cold)than previously? black smoke out of the exhaust? backfiring or coughing/spluttering? having said that fitting a pod filter by itself would cause none of the above, there would have to be other contributing factors. please explain your reasoning???

VX2VESS
22-01-2008, 07:55 AM
avoiding the rich questions?

alexs
23-01-2008, 08:55 AM
I know its running rich because i can smell it and there is black smoke comming out and i can see black spots on the back bumper just above the tips. Also i got 90kms from 22 Liters of fuel.

VX2VESS
23-01-2008, 09:03 AM
i find it hard to believe a pod could do that. even if not setup correctly.

Check the error codes for another problem.

if not put the old filter system back and see if it get better. if not better its some other problem.

alexs
23-01-2008, 09:55 AM
I heard its because i moved the temp sensor from the air box to the MAF attatchment where the pod connects to. Im very confused now.

DaveHAT
23-01-2008, 10:44 AM
Alex ... instead of second guessing things based on internet diagnosis ... take it to whomever tuned it originally and get them to look at it. Then you'll have a difinitive answer about whether it's running rich.

The possible causes are endless. Is the pod shielded from the engine bay heat as compared to the modified OEM airbox? Does this new pod suck hot air from the engine bay as a result?

O2 sensors are the usual common cry when anything goes wrong with a car ... maybe they are finally stuffed? Being a VT ... if they're the originals the would be past their best and therefore lazy which may explain it.

Is your car MAF tuned? If so ... is the MAF plugged in correctly? Without actually looking at the car and having more accurate information ... everyone is going to be guessing at what may be wrong. I agree with others in that I doubt a simple change to a POD setup would make it run rich but go and ask the whomever tuned it to have a look and measure the AFRs.

Then you should know if it is actually running rich and what the possible causes may be.

Oztrack Tuning
23-01-2008, 10:50 AM
Make sure the IAT is plugged in. Thats the first thing to check.

Steve-LS2
23-01-2008, 10:53 AM
maybe you just left the handbrake on :stick: ::confused:

VX2VESS
23-01-2008, 11:41 AM
I heard its because i moved the temp sensor from the air box to the MAF attatchment where the pod connects to. Im very confused now.

moving it should make little difference if installed correctly and working.

if your sucking hot air it should be leaner if the intake sensor is working. colder air will richen it up but to too the point of blowing black smoke and using that much fuel, would be a slight increase.

VNV8
23-01-2008, 03:44 PM
other way round mate, the hot air has less oxygen by volume which would make it run rich (too much fuel and not enough air). alex take it back to the tuner, a pod filter wouldnt cause this much difference on its own.

JezzaB
23-01-2008, 04:05 PM
..........

VX2VESS
23-01-2008, 04:28 PM
other way round mate, the hot air has less oxygen by volume which would make it run rich (too much fuel and not enough air). alex take it back to the tuner, a pod filter wouldnt cause this much difference on its own.

but the ait sensor should compensated down and the o2's

alexs
24-01-2008, 05:42 PM
well i dont have a heat shield and its just sucking in hot air i guess. ive changed back to the air box and ill see if it still runs rich.

Oztrack Tuning
24-01-2008, 06:41 PM
They run richer for certain in cold temps and leaner in hot temps. Thats the way they are fuelled based on manifold pressure , rpm and a calculation that uses a blend of coolant temp and intake temp values.

The tune may have long term trims enabled and they have learned in a way that is dumping in fuel everywhere. I think you need to get the tune checked.