elreg Posted January 13, 2007 Posted January 13, 2007 hey folks, im new to this site, purchased my 1st scoob, bugeye wrx sti prodrive style back in october so far i have replaced all the tyres, engine hoses to samco, fitted my flaps, green panel filter, new rear pads etc... looking to upgrade exhaust system next, dont want it to be too loud and still road legal i.e emissions etc also will replacing cats etc bring warning lights on etc? was thinking of high flow cat, with de-catted down pipe, centre section and bb. would c&c be able to replace down pipe and centre section??? is dastek the best place for re map in central area? sorry for all the questions looking for all the info i can get, anyone else on here from paisley area??
sheep Posted January 13, 2007 Posted January 13, 2007 Hello and welcome![Y] If you are thinking about getting your car mapped here is the man to speak to http://andyforrestperformance.co.uk/.
fai17 Posted January 13, 2007 Posted January 13, 2007 Hi and welcome.. Nice car[] and i'm from Paisley too. We are having a wee kind of meet up tomorrow night at my restuarant in George St. Go to Meercat or C & C for your exhaust
elreg Posted January 13, 2007 Author Posted January 13, 2007 fai what do you drive? is c&c better than gettin h&s stuff?
fai17 Posted January 13, 2007 Posted January 13, 2007 STI 8 Type Uk...WR Blue with a few chose mods[]
craig mac Posted January 13, 2007 Posted January 13, 2007 I would suggest Hayward and Scott without doubt for your exhaust parts
elreg Posted January 13, 2007 Author Posted January 13, 2007 replacing down pipe with a de-catted section,centre section and a sports cat. will this not mess up my ecu and put warning lights on the dash?
RA Dunk Posted January 13, 2007 Posted January 13, 2007 i gave mine the full decat with out any problems, not saying yours will be the same though []
st3ph3n Posted January 13, 2007 Posted January 13, 2007 I think it will on a bugeye. Best to get it mapped if you decat to ensure it's all running perfect.
STi_Bandit Posted January 13, 2007 Posted January 13, 2007 Can have a look at this thread mate few exhaust notes are posted so you can hear the difference in different maufactures / setups Bandit SIDC Exhaust Notes
~ ~ Cal ~~ Posted January 13, 2007 Posted January 13, 2007 Hi elreg, I know it not an STi but read this thread of mine. It's relebant cos I have a Sports Cat and H&S system I will try to find it though Cheers Cal Voila :- here's the post from way back in September ................. bear in mind that a PPP highflow cat is not 100 CEL I still get playful pelters for claiming the car to be a STi killer but my videos from KH don't lie. STi10 with 2.5 Litre engine was dispatched on two occasions although I know the track well. Numerous other weapons dealt with too but the track varied from damp to sodden ! Cheers Cal ********************************************************* Anyway, purpose of the post is to show how a few tweaks can dramatically transform a 215 bhp standard UK WRX into something a bit tastier. 3 graphs on each page represent the 3 different dyno sessions I have had at Wallace Performance ( Dastek system) over 3 different stages of tune over 12 months or so ( I kept using the same dyno set-up for consistencies sake despite having no control over weather etc !) Stage 1 - the usual attempts to let her breathe and free up some burble. Factory Map + K&N panel filter, WR Sport backbox, ScoobySport decat link pipe and unsilenced centre section. Horrible standard WRX downpipe & up-pipe cat still in-situ. Stage 2 - a remap to see what gains can be realised from a Ecutek remap Andy Forrest Map + the above Stage 3 - more serious tweaks in pursuit of more boost & ponies Revised Andy Forrest Map + ScoobySport Backbox mated to to complete turbo back TSL Thundercat system ( high flow 100 cell cat) + decat H&S up-pipe + ported turbo ( though still a standard TD04). Not hitting target boost in 2nd as I need to tweak the actuator but 3rd & 4th is hitting 1.2 bar of boost. The results (I know the real indicator is how it feels on the road but the below is a worthwhile exercise to superimpose the three runs) In summary, I have a nice quick spool up with torque flooding in early & strong ( above is 4th gear on all runs (I believe)) with peak torque almost delivered at only 3500 rpm. Bottom line is 280 bhp @ 5750 rpm and 265 ft.lbs @ 5200 rpm. [H] Any thoughts ..as to what should come next ( TD04 hybrid perhaps plus larger IC ?) Not really keen on going beyond 300 bhp in line with my reliability mindset. Handling recommendations also welcome - not keen on the brutal drop of Teins but Eibachs may be next. However, the standard springs are excellent on a bumpy B-road so maybe Whiteline gear alone may prove the remedy ? Cheers Cal ********************************************************************************************************************************************************************************* Incidentally, I bought a VF35 turbo today so should be breaching the 300 bhp mark and aiming for 310 bhp. Not going to tune the erse off it as it's a daily drive. CGS
harvey_smith Posted January 18, 2007 Posted January 18, 2007 Very interesting comparison of figures and nice to see the progression. Good figures for a Sports Cat. A TD04 hybrid would retain the early spool and give you a bit more. A good turbo IMHO if you are not chasing figures. The VF35 will have the potential for quite a big step up but will not be as responsive as what you have now. You could counteract this to a certain extent with ported headers. I assume you want to retain the sports cat and not go for a purpose designed decat up-pipe. What injectors do you have because the VF 35 will operate comfortably at 340 bhp without extreme measures.
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now