sharpy2010

iTrader: (1)

Hiya :-)

I want to fit a Blitz Nur Spec R Exhaust to my 2005 Blobeye STI, and I want to know if I will be able to get away without having it remapped once I've done this?

My mate thinks the ECU will remap itself, but other people are saying it will kill the car. No one really seems to know for certain.

Any help would be much appreciated!!!

Cheers!

BBB3

iTrader: (7)

if it was a late classic you can get away with it but on a new one i would say you will need a re map

sharpy2010

iTrader: (1)

Hiya!

Without wishing to sound like a complete spud (which admittedly I am, being new to Subaru ownership!), how do I know if mine is a Classic or a Newage?

There are pictures of my car on here if you are able to tell just by looking?

Cheers so far!!!

p.s. If it IS a new one, as you put it, what are the implications of putting on a new exhaust without remapping?

BBB3

iTrader: (7)

your car is a 2005 sti BLOBEYE.....if you fit without a remap you will get full cut and check engine lightonthe dash....along wiht otther problems

Scooby_CL

iTrader: (2)

well you said its a 2005 blobeye which makes it a 'new age' impreza. i'v modded and owned lots of big turbo cars but like you am unsure why from such little modifications it can mess things up...(i'm putting a guess at the fact its run on a MAF and not map sensor)

I currently have a sports cat down pipe but want a straight decat pipe putting in, will that two mean i have to remap the car just from a down pipe?

Scooby_CL

iTrader: (2)

..

scoober101

Really? The blitz R system is only the centre section and back box, the downpipe and 2nd cat remains standard. Ive got the blitz S backbox on mine and it dosent need a remap. I think the only difference between the R and the S is the R has a larger diameter non resonated centre pipe.

The noise level difference between the S and R from within the cabin is quite alot, the resonated centre section makes a big difference hence why I only went for the backbox cos I do alot of motorway driving.

This might help...

sharpy2010

iTrader: (1)

Hey again!

Thanks for all your informative replies, really appreciated!!

The picture is very useful indeed, I can see exactly what it is that I'd be adding now, in respect the Blitz Nur Spec R. If I do add the Nur Spec R, does that mean that I'd still have the rear catalytic convertor in place and that it would still pass the MOT?

If I ran a de-cat pipe as well as the Nur Spec, would the Nur Spec be much louder than if I just ran it with the cat?

Thanks again!!

BBB3

iTrader: (7)

just going on what i've heard and seen on here,i know if you decat it you will deffo need a remap i personally would say it need a remap as it takes the smallest mod to cause the biggest problems

BBB3

iTrader: (7)

i have a nur spec r on my 340 bhp classic and its LOUD but it sounds sweet

STI Glenn

If you fit a cat back it does not need a remap decat yes all blitz are loud but nice

scoober101

If you decat the downpipe, defo get a remap, it wud be unstable if you didnt map it properly after decating.

If your STI has the prodrive pack then your second/rear cat would have been removed. If your STI dosent have the prodrive pack then you could still remove the rear cat and still pass an mot.

You 'should' be able to pass an MOT with just the downpipe cat or a sports cat. It would fail massively if the downpipe was decatted. Big performance increase but emmisions wud be over the limit.

Depends where you get your MOT done (ahem, wink wink)

Scooby_CL

iTrader: (2)

I currently have a full Blitz exhaust and mid pipe...but have a PPP sports cat down pipe (its been remapped to this) would just fitting a straight decat mean i have to get it remapped again or will the flow be almost identical there for not effect the ecu?

scoober101

Not sure, the margin between the sports cat and no cat would be smaller than the standard cat and a decat. However, you'd be going from a bottleneck catted system to a free flowing system without any cats, that would probably call for a remap to be on the safe side but Im not sure.

swrtno1

iTrader: (2)

If you de cat the down pipe u should def get a re map or map tweek if the car is allready mapped for other mods.

A recipe for disaster if you de cat the dp and dont get it re mapped!

I have a 3 inch dp with sports cat then blitz nur spec r and passed MOT with just the one cat in the system! Just make sure that the cat is hot when taking it for a MOT.

Go on get the blitz fitted and let it roar!
You wil either love or hate the noise of the blitz, I love it!

scoober101

Agreed, have a look for vids on youtube, theres loads. That will help you decide if you like the blitz sound.

The R system will give a deeper exhaust note than the S. Both are still nice and burbly thou!

The Rig

iTrader: (13)

what bhp gain does the blitz R give with and without the bung, anyone have any figures ?

jeff mx

iTrader: (1)

getting back to sharpy's original question, answer is no remap required. i fitted a blitz nur spec-r to my 2003 sti type uk without remap and had no problems whatsoever. still passes mot as only downpipe cat is needed really to keep emissions low enough for mot. so go ahead and let your scoob roar, that blitz note just cant be bettered imo

morris77

how do you tell the difference between a R and an S????

joz8968

iTrader: (13)

R is the full system i.e. back box + centre. I think the R's backbox has a 3" inlet to match its bespoke 3" centre.

S is back box only. I think the S has a 2.5" flange to mate to OEM centre sections (but not sure if the inlet pipe then widens to 3", or still remains at 2.5"...?)

sharpy2010

iTrader: (1)

Great stuff, loads of informative replies as always, exactly what I was looking for! I'm now going to purchase a Blitz Spec R and a Decat pipe for the back cat, and looking forward to hearing the awesome noise the cars going to put out now! Cheers for the help everyone, much appreciated!!

bigsinky

******* noisy bastid. it will get on your nerves in a few months. try having a conversation while driving at 70 - 80 on the motorway.

scoober101

It does, the 2.5" flange widens to a 3" on the back box.

joz8968

iTrader: (13)

Cool.