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So I've just installed a 4" Dump - 5" Cat in preparation to be Tuned on Friday, Problem being I need to drive 6hrs to get to the tuner. Everyone says this will cause Overboost so I took it for a drive to try and activate Limp mode so I would know when it happens and what I'm dealing with rather than finding it all out in the middle of woop woop. Boost seemed to peak at 13psi (OBDII-android device) gunning it in 2nd or 3rd but once peaked it wouldn't boost past 3psi until the engine was shut off, no codes or lights. Made all the regular noises and ran Perfectly but with the power of an n/a xr6 and without the push back into the seat. Is this what normally happens or am I not thrashing it hard enough? Doesn't seem so bad. Also has full exhaust, turbo side intake, stage2 PW Intercooler. Never Tuned

So I want to put in a 4" dump & cat before I go for a tune. Already have a twin 2.5" cat-back pacemaker exhaust which I love the sound of. Am I right in saying the standard system is 2.5"??? so obviously where the pacemaker merges and bolts up would be a restriction and need to be cut out. So how then do I split from a 4" to twin 2.5"? Are there pre-fabbed adapters? or will it be a costly custom job? Throw some dump/cat combos at me.

hey guys , was at turbotrana's earlier today trying to sus out a few things , I came to realise that the noise ive been assuming was an exhaust leak but could never find is definitely the dump pipe gasket. Ive been looking everywhere to find a thread of "how to" replace the gasket the easiest way possible. All I have been able to find that's remotely close is threads on "how to remove turbo for flapper upgrade." If I can avoid pulling off the whole turbo and all the oil return lines and coolant lines I would much prefer that , I dont have a hoist but I do have a quality jack. If anyone can put me in the right directions it would be greatly appreciated, thanks.

Hey Guys, - just interested in all your experiences / comments on the following: I have a 2013 mk2 FG XR6 TURBO UTE with Luxury Pack (Black of course ) Didn't exactly have and cash to spare on it, so have done minimal mods. First thing I did was a Herrod performance airbox. Gain was minimal, most change in the noise. Next thing I did was remove the restrictive ring after the cat. Again minimal gain, no difference in noise. Decided to go for a flash tune, even through I was sure I would never do it until I ran out of warranty - I ended up getting a generic tune from Intune Motorsports in Sydney sent down to me preloaded into a device paired to my car. After the 14psi tune was loaded up successfully, car is much better. Has heaps more power down low speeds - at 0-100 especially. This tune also removes the pop on change (its a ZF), which I did like, however it now lurches fwd on change instead of pausing, so this is a plus for pace. (Also great for power skids, as on a cold morning, you can nail it, wheel spin through first, which is intensified on the change and this goes for a good amount of time through second... just something about hanging it out in a straight line without the brakes.. Once I get up to midway through 3rd... full throttle, it sounds quite rough... still a consistent motor note, just a vibrating kinda roughness through the whole car - I have no idea wha is causing this?? Perhaps running out of injectors? - I know custom tune is the way to go but I wont be doing that for quite some time. Has anyone else experienced this?? On the exhaust, I hate loud cars when just cruising around, so haven't touched it yet... I might do the cat one day... just hafta see.... because Utes sound crap stock... the sedans are way better... guess its just the shorter/single pipe?...but its a no comparison. In the way of drags... main story is with my mates BF XR6 TURBO SEDAN... has full exhaust, injectors, custom tune etc... 297rwkw.... I gave him a good run.... pulled ahead off the mark... and continued to crawl slowly away the whole way to 180kmph - on a private strip. So not too sure what mine would have... maybe around 300?... seems weird, as dyno's all vary, but I dont think mine has a less as 250rwk... which some people claim are the figures after just a flash tune and intake. Glad of all your comments / ideas for what I should do! O and also I have 4 pot brembo's being fitted at the moment... needing to use 17mm spacers to clear the 19 inch luxury wheels. Cheers.

Hi I fitted the x force 4 inch dump, high flow cat and merger a couple of days ago and was wondering if anybody has had clearance issue with the steering intermediate shaft? I had to partially dent it a bit to get it to clear but being stainless it was very hard. any ideas? I also found of the two heat shields I could only get the lower one back on but this too is pressed up against the dump. I have read on a here some people don't even refit these which I'm happy too do but worried about long term heat damage. anybody with past experience with something similar?

I've had my car for 6 months and am yet to get 400km from a full tank, fuel economy seems to be getting worse. Car has done 108000km so I'm guessing o2 sensors arn't as efficient anymore, just have a few questions. Do the fg xr6t's come with one or two o2 sensors? anyone have part numbers and prices? if car has 2 o2 sensors then do they both have to be replaced? a seller on ebay sent me this message but I have no idea what he is talking about , " One for the inlet manifold which is a genuine part ($185). The other is for the undercooked outlet pipe which is Bosch ($210). " is he talking about the MAP sensor before the throttle body and the o2 sensor before the cat?