Went to my local blueflame stockist (Urban Racing) today to get a price and some info about it, price seemed reasonable and they said i would get slight power gains with the a sports cat or i could have a decat which would give even greater gains in power. They said 20-30bhp:eek: which i thought was quite impressive:D

Any problems with running a decat on a fabia vrs (remapped) and are these power gains realistic?

Would it pass an MOT without a cat?

Also whats better/safer decat or sports cat?

Any info would be appreciated

Cheers Paul:thumbup:

Well firstly, you won't pass an MOT test without a cat.

I've heard rumours on here that a de-cat is bad for the OEM turbo? I havn't got a clue if this is true though!

Power gains would be very good if the cat was removed though ofcourse, but a sports cat is going to be the obvious safer option i should think!

All up to you though chap!

Well firstly, you won't pass an MOT test without a cat.

on a petrol.

diesels arent tested for emissions, their smoke map is tested, diesels dont need cats they have the DPFs (diesel particulate filter) and will pass the MOT without one, unless theyve recently changed diesel MOT's

20-30bhp is a ridiculous claim, 10-15 on a turbo back system

I heard 10-15 gains are more realistic as well....20-30 is not to be expected at all!

I would be pleased with 10-15 bhp, would you guys go for the decat then or would it cause problems with the turbo?:confused:

I would be pleased with 10-15 bhp, would you guys go for the decat then or would it cause problems with the turbo?:confused:

Diesels don't get tested on emissions, just smoke, so MOT will be fine.

It's been stated (on Briskoda) at least once that the factory turbo can't be accurately controlled with a decat downpipe and that it'll overboost, overspeed due to too much gas trying to escape through too small a hole (the turbine).

You may get away with a decat if the car is standard and not remapped. IMO it'll still boost spike, though to what degree....?!

Depends what your goals are. If you intend to fit improved induction (PD160 intake or similar and/or a panel filter upgrade) and/or intend to get the car remapped, ask around the well established tuning companies before deciding which way to play it.

J.

How much development work has gone into the blue flame vRS exhaust? I know on the model they provide for the Meg 225, that they've actually lost power.

This has been put down to the "bigger bore pipework must be better" theory and the engine is actually down on power due to the loss in back pressure from the 3" system. Milltek for instance is a 2.75" bore system

How much development work has gone into the blue flame vRS exhaust? I know on the model they provide for the Meg 225, that they've actually lost power.

This has been put down to the "bigger bore pipework must be better" theory and the engine is actually down on power due to the loss in back pressure from the 3" system. Milltek for instance is a 2.75" bore system

Years ago, apparantly, if you changed the exhaust on an XR2i for anything other than the Dagenham build one you also lost power.

I have a blueflame fitted with sports cat and when rolling roaded standard produced 150bhp however that was also with green panel filter and pd160 intake. I then put on my AMD One-click and got 177bhp and 271lb/ft torque. My cat has since gone wrong (something rattling inside) and blueflame are proving difficult to get hold of so will probably be going decat soon.

Diesels don't get tested on emissions, just smoke, so MOT will be fine.

Depends what your goals are. If you intend to fit improved induction (PD160 intake or similar and/or a panel filter upgrade) and/or intend to get the car remapped, ask around the well established tuning companies before deciding which way to play it.

J.

Already got PD160 intake & green cotton panel filter, also had a remap:D

Just intrested in an exhaust for better sound and a few extra bhp would be a bonus:thumbup:

Sound you get is just whistley (if that's a word) you don't get much grunt it's a diesel after all. Since having my Forge FMIC fitted the car has become slightly more grumbly (making up words is a must when describing sound ) in sound. A decat definitely makes it sound deeper and more petrol like as my mate has a milltek decat on his Ibiza FR and sounds quite awesome.

Sound you get is just whistley (if that's a word) you don't get much grunt it's a diesel after all. Since having my Forge FMIC fitted the car has become slightly more grumbly (making up words is a must when describing sound ) in sound. A decat definitely makes it sound deeper and more petrol like as my mate has a milltek decat on his Ibiza FR and sounds quite awesome.

Is the blueflame not worth getting then if there's not much increase in power or a better sound:confused:

Has your mates FR been reliable with the decat?

Cheers Paul

try the devonutopia tuning special - straight through pipe....

Well the bits related to the engine and exhaust have remained reliable. He's running a Jabba big turbo conversion and lots of other bits and the decat hasn't caused any problems. I think with a decat there will be an improved sound and a blueflame or Milltek is worth getting IMHO. The sound is quite addictive I love the louder whistling of the turbo but maybe that's not your cuppa tea. I never put it on the rollers to find out what the power was before I added my bits so if you go by standard figures it did make a difference power wise. The standard fabias on the day I ran mine were getting 135ish so it's given 15bhp increase which is what you were expecting. The AMD One-Click I had on was a generic map so never took this into consideration. Now I have more done to the car and custom map I'm hoping for a nicer number starting with 2

decat decat

decat looks like the favoured option here. the only problem i know of with it as stated above is the turbo issue. so you might want to look into that otherwise all good

ran my OEM turbo with an agressive remap for about 6 months- no cat no backbox and no probs....

Can hear the OEM turbo whine pretty nicely too....

Dont no what to do:confused: sports cat would the safer option but its more expensive, not as powerful and doesnt sound as good or should i risk a decat and get a better sound and more power:confused: oh and save a few quid:thumbup:

Anybody had any issues with a decat?

I have a milltek sport cat with the Milltek system. Mine sounds very deep and rumbly since I fitted the K&N 57i. I would go with the sport cat unless you thinking of upgrading your turbo. When I decatted my other car and had to put a sport cat on for the mot. I only lost 2bhp overall and no loss of driveabilty. That was with a 100 cell cat converter.

ran my OEM turbo with an agressive remap for about 6 months- no cat no backbox and no probs....

Can hear the OEM turbo whine pretty nicely too....

So not much of an exhaust at all then!

Dont no what to do:confused: sports cat would the safer option but its more expensive, not as powerful and doesnt sound as good or should i risk a decat and get a better sound and more power:confused: oh and save a few quid:thumbup:

Anybody had any issues with a decat?

You could try the "piece of mind" approach.

a) Fit boost gauge and get used to the mormal numbers.

Fit exhaust and downpipe of choice and continue to monitor the numbers.

It might be possible to log the numbers with VAGCOM too.

J.

You could try the "piece of mind" approach.

a) Fit boost gauge and get used to the mormal numbers.

Fit exhaust and downpipe of choice and continue to monitor the numbers.

It might be possible to log the numbers with VAGCOM too.

J.

Could you fit a boost gauge in the slot underneath the stereo:confused: I think that would look ace:cool:

If so is this difficult to do:confused:

You learn something new every day! I never knew that about a diesel regarding the cat! (was a diesel virgin before the vrs lol)

just to clarify, for those going down the decat route, what is required (upgrade wise) to make sure that oem turbo works fine with the lack of back pressure etc? or is it just that, bigger turbo and remap?

and loosing the cat, on blueflame model gives approx 15bhp? what about with cat, what are the results then?

and loosing the cat, on blueflame model gives approx 15bhp? what about with cat, what are the results then?

Is there any proof of this 15bhp gain? I'd be guessing 5bhp tops and I'd also be concerned about the reduced back pressure which will affect the turbo.....

Chris