mattiekane

I'd throw my name in but don't think I could spend the amount of time required Loud pipes save lives

Right guys, I have a 2004 '54' WRX STi Impreza, has 119~k miles on, in reasonably good shape, however, it's developed a knock on the N/S of the engine. Is this worth a rebuild do you think? Also any prices and recommendations would be useful I'm in North Yorkshire Loud pipes save lives

There is a thing about letting it cool down just idling, it's about the acidic vapour the oil gives off in the cooling process, you better off driving gently as it give chance for the engine, turbo etc to cool down relatively evenly. If you do fit one get a catch can fitted too Loud pipes save lives

I've lately had similar issues that turned out to be lambda sensor and injectors, by also sounds like it *could* be a mass air flow Loud pipes save lives

You can hear it here on mine, even tho the limiter cuts in it pushes through. If your determined Todo this then the 2 wires for the coils you have a splice into with one way diodes then join them together Loud pipes save lives

Omex will tell you the same they told me, Subaru is not supported by them and the unit dosent work on them Loud pipes save lives

Yeah, wait till you get it remapped and get the mapper to-do it [emoji16], it's a 100% better option Loud pipes save lives

Yes, don bother, it's a pita, dosent work right(pushes through the limiter) buggers your lambda sensors. Loud pipes save lives

Yeah, brand new lambda sensor that was faulty Loud pipes save lives

Just to confirm, have give it a good run out this morning and drives nice again, no hunting, no hiccups and nice and smooth Loud pipes save lives

You an me both, was getting quite stressed with it lol Loud pipes save lives

All good now buddy, manage to sort it, thanks any way tho!! Loud pipes save lives

Fixed it tonight, swapped lambda sensor back to the old one and hey presto, new one must of been duff Loud pipes save lives

Oh, and the garage tried a maf in but didn't make a difference, that have been through it and can't find a reason for it running the way it is, so I'm going back to the lambda sensors I've fitted, questioning the quality and going to refit the old ones on the off chance the injectors actually fixed the fault but dodgy lambda sensors have introduced and second fault Loud pipes save lives

Idle on a warm engine preferred [emoji16] Cheers [emoji106] Loud pipes save lives

@savagebulldog What would you take from that lambda sensor reading? Loud pipes save lives

Have any of you guys got the torque app and secondly can you screen shot what your lambda sensors are doing on a graph? Think my new one is goosed [emoji85] Loud pipes save lives

Unfortunately not, the joys of living in the middle of nowhere haha Loud pipes save lives

Yeah I tried that lol Unfortunately (possibly fortunately) the car is pretty standard, just DV and cat back blitz nurspec. £150~ for the maf was the cheapest (definitely)genuine item I found. Found a few denso's for £60ish but couldnt confirm they where genuine Loud pipes save lives

Only just seen this, I've put it into a local garage as time restrictions and a poorly child is preventing me from getting this sorted, everything pointing at the mass air flow sensor been duff now, but gonna wait and see what the garage comes up with Loud pipes save lives

**Update** Since doing injectors, CO is down to 0.02(Pass) HC 57(pass) lambda 1.4~(Fail) It's also hunting at idle and what sounds like a misfire when rev are held steady at 2000rpm-2500rpm Loud pipes save lives

Yeah, tanned is behind to the test centre still no luck, even tried it with no air filter in on the off chance Loud pipes save lives

Right guys, Impreza failed it's MOT on emissions. CO fail(high) HC pass Lambda pass Also noticed when your driving and lightly press the throttle there is a missfire sensation. Cleaned throttle body Checked pipe work Had lambda sensors New injectors New spark plugs No fault codes, no engine management light......no fricking idea haha Loud pipes save lives

At least it was a simple fix [emoji106] Loud pipes save lives

Keep us updated [emoji16] Loud pipes save lives