THP power loss

[MNJG]

So I keep getting a p178 system too rich off idle ...... Could this have anything to do with my pipercross filter ????

[Gazski66]

So I keep getting a p178 system too rich off idle ...... Could this have anything to do with my pipercross filter ????

Hope not as i have just put one in

[Ragnarok]

Hope not as i have just put one in

I doubt. Sounds like you have a vacuum leak?

[monkeynuts]

So I keep getting a p178 system too rich off idle ...... Could this have anything to do with my pipercross filter ????

Maybe because your timing is out the ECU is making the mixture richer to stop det (Pinking) and stopping a meltdown

[MNJG]

Just curious because I took my filter out and put the old one back in and the power was back straight away and the errors had gone ..... Actually so confused

[Superfly Guy]

Just curious because I took my filter out and put the old one back in and the power was back straight away and the errors had gone ..... Actually so confused

Did you remove the packaging

[Chris_Blue]

Ive seen this a couple times before on here, with putting in a (Pipercross) performance filter.
Also, after installation of a cone filter induction kit, where the owner just returned the air filter to standard. (Couple years ago on here) There didnt seem any explanation.
Never had an issue with my KN Panel filter, did 12,000 on my last THP, then recharged it and its done 13,000 this THP. Not to say it wouldnt happen with a KN Filter.

No explanation ever come out of it, and even the Tuners recommend the Pipercross filters
Something to do with the sensors maybe...fuel to air ratio and all that
In fact one Tuner recommends sticking to the paper OEM filter and change it out every year, (Costly in the long run, and no perfromance gain)

[colganraz]

I thought when timing slipped the mixture became lean only? Or so i was lead to believe, i would guess when the timing slips it slips in only one direction, the direction which the chain runs in, making the valve open in a way that only creates lean running, or something like that... any elaboration would be appreciated!

[Chris_Blue]

SPT Tuning reckon theres a glitch on the standard ECU map of the 150/5 making it run a little rich under certain circumstances- again, that comment is on here somewhere

[monkeynuts]

I thought when timing slipped the mixture became lean only? Or so i was lead to believe, i would guess when the timing slips it slips in only one direction, the direction which the chain runs in, making the valve open in a way that only creates lean running, or something like that... any elaboration would be appreciated!

I think if it slips and does go lean the ecu may over compensate and go megga rich to stop det

[MNJG]

Yeah I did haha 😜

[MNJG]

So a remap would solve this 😉😉😉😉 haha

[Superfly Guy]

So a remap would solve this �������� haha

You could call it a 'proper-map' as the OEM data ive seen does look suspect.

[pmatil]

Well, I have 100% standard THP, even the filters, and got the error (once).

[Markymark]

Great. Mine had the same thing. Happened once and recovered by itself. Dealer found nothing wrong, resetted the code and has been working fine since (last fall). The weirdest thing is that I didn't get any warning lights on the dash. Did you?

Same symptoms as mine although seems to running fine you would probably find it well down on power if put on a rolling road as I did