Hi all,

I have just bought a 2006 hawk eye wrx. I bought it as standard and have just put on a turbo back de cat cobra 3" exhaust, the guy that put it on at my local power flow specialist said I wood get about a 30 bhp gain. (is this accurate)? The car does feel quicker.

I'm just enquiring about if I really need a remap and what gains I could expect from this and what sort of remaps people recommend.

At the moment everything else is standard.

Any help given is gratefully received as this is my first Subaru and I know very little about the cars.

But I'm thourghly enjoying driving it.

Thanks

Doug

 

so you have de-catted it ? i would not drive on boost until i had it mapped

 

Yep if youve totally decatted a re-map is reccommended or as a minimum get it checked with someone that knows what there doing and has detcans etc.

 

As above , dont boot it too much until the remap

 

If you haven't got a cel on now you soon will have, not recommended to go full decat without remap, boost control will not be operating correctly drive off boost and get it done asap. Or get your standard downpipe put back on and stick with a cat back until you get it mapped

 

If you put a decat downpipe on the ecu cannot control the engine within the safe margins.5 secs of boost engine will fail maybe not now but later on,piston lands partially melt next time on full boost they fail.Put cat pipe back on until remap,I really hope for you everything will be fine

 

needs a remap, looking at your location try www.andyforrestperformance.co.uk


Simon

 

Hi, thanks for your comments. The guy that put the exhaust on told me it would be ok and i havnt driven the car hard since it was put on anyway. I have just emailed that Andy Forrest guy so hopefully I can get the remap soon. Can anyone also give me an idea to any other mods that can boost performance and looks. Bearing in mind I will be going for the stage 1 remap to start with.

Thanks

Doug

 

just a panel filter and if 2.5 wrx same as 2.0 then a samco intercooler hose, possibly a fuel pump for safety

 

Yeah I already have the panel filter although not fitted yet! If I fit that would it help until the remap? I have enquired about a fuel pump aswel. Thanks for all the help and any more suggestions and advice is gratefully accepted.

Cheers

Doug

 

Iv spoken to a few specialist about this remap after decat, just trying to find out more really as im considering it myself! But the specialists that i have spoken to have said that its fine to run the exhaust with no cats in the exhaust without a remap.

What is the issue of running no cats without a remap?
How does the remap achieve the 'solution' to it?

 

Have you spoken to subaru specialists who know how the ecu works and have seen what can happen running a decat without a remap?

 

The exhaust is now more efficient and the ecu needs setting up to reflect that.
Quick response as typing on my phone.

It is resolved with a remap but custom setting up the car to the mods on it, altering boost, fuellig and ignition.

Depends what the car is, usually find for example a 2litre wrx newage is safe decat but will produce more power mapped.

Simon

 

No, it has to do with air fuel and timing mate as jolly says - the specialist. The exhaust will literally allow the turbo to spin faster and therefore produce more boost. The ecu may not compensate for this fuel wise thus running lean. Lean = things break very fast. And if the fueling is within the safe range, then the timing wont be, thus still creating det. This is what a lean mixture produces. So no an air filter won't help, if you want the car to last you,spend the money on the map, then in future get a dump valve fitted a Forge one or similar and you 'shouldn't need a remap then.

 

Im ready for my remap soon . Probably need to look into a walbro fuel pump , silicon intercooler elbow and your ready for stage one then as well

 

Ok I have spoke to 2 specialists today Andy forrest and also wallace performance. Both say different things about the remap. 1 says I don't need a upgraded fuel pump because the injectors are the same size as the sti. Has anyone had any dealings with either of these tuners? If so how were they?

 

I had a 3" turbo back exhaust on my Hawk and when I got it mapped it was already running 249bhp and fuelling was spot on.

You shouldnt need a pump for that level of tune but they can be had for about £65 from Apex performance and is easy to fit so might as well stick one in, IMO.

 

Thanks,

The car seems to be running fine, there is power and boost when I need it and there is no noises coming from the engine or turbo.

What sort of figures did yours produce with the ramap?

Cheers

Doug
Ian taking it to wallace performance to get checked anyway. If it's ok I'm going to leave it till after the winter and remap it. If not then will do it soon.

 

looking at around 290 mark imo maybe a bit higher with a decat

 

The torque is the big thing with a remapped and decatted hawk WRX. You should be seeing around the 350 lb/ft torque. This makes for a great road car. I have had mine done and well pleased it made 285bhp and 350 torque

You probably dont need an uprated fuel pump but for peace of mind I changed mine as they are cheap to buy

You could also change the plugs to 6's (cooler plug) but again maybe not necessary

 

Yeah mine made 278bhp and 345lb/ft of torque.

 

Ok thanks for all the help, I'm trying to book it in for the remap at the end if the month. Those figures are prity impressive. Like I say it's my first Subaru so need all the help and info I can get.

Thanks for all the help and anything else anyone can add I'm grateful for it.

Doug

 

Ok thanks for all the help, I'm trying to book it in for the remap at the end if the month. Those figures are prity impressive. Like I say it's my first Subaru so need all the help and info I can get.

Thanks for all the help and anything else anyone can add I'm grateful for it.

Doug

 

Book it in with Andy F even if you have to wait another month, theres no comparison between Andy and Wallace. Mines booked in a week monday for my first remap and cant wait