BigRoy Posted July 11, 2003 Share Posted July 11, 2003 Hi guys, I know some of you have done this so a couple of questions. What power gain/driveability would you expect by replacing the stock exhaust with no cats with say a Nur Spec? Is it worth it in terms of gain versus noise? If I just remove the cats and leave stock, any idea on power increase/driveability I might expect? Link to comment Share on other sites More sharing options...
Justin Posted July 11, 2003 Share Posted July 11, 2003 Best, cheapest mod for the power gains. Benefits: 1. Turbos spool quicker, better throttle response 2. Luverly noise. Not too loud in the cockpit. 3. Goes fast as f*ck Drwabacks: 1. Tricky at MOT time (emissions) 2. Need to look at buying new plugs, boost restrictor plate, boost gauge and fuel cut defenser. :flame Dev Justin Link to comment Share on other sites More sharing options...
SMW Posted July 11, 2003 Share Posted July 11, 2003 You shouldn't need a restrictor ring on a UK car as they don't suffer from 'boost creep' in the way j-spec models do. Definitely worth doing as you will be more than pleased with the results. No massive increase in noise unless you remove the baffle from the Nur Spec..........as I have done:D Link to comment Share on other sites More sharing options...
Chase Posted July 11, 2003 Share Posted July 11, 2003 I'm thinking of taking out 1 cat (J-Spec TT), but don't know whether I should remove the first of the second cat... Link to comment Share on other sites More sharing options...
Sharpie Posted July 11, 2003 Share Posted July 11, 2003 I lost both cats and put a Hiper on and moved upto 0.91 Bar max in my UK (I did have a VFCC/FCD fitted at the time too) Well worth the ££ Just got to keep one of the moggies for that annual PITA You do not need to go for a noisy back box if you are not into that ! If you left the stock back box on then you are leaving in a restriction so, the gain will not be as good I guess...... both cats out and a aftermarket back box and you WILL be for weeks - Oh yes. Mind you, you might hit fuel cut on cold days so a FCD/VFCC might be in order too. Boost gauge is a must! as no two cars are the same. HTH Link to comment Share on other sites More sharing options...
BigRoy Posted July 11, 2003 Author Share Posted July 11, 2003 Cheers Guys, now wheres my Visa card gone! Link to comment Share on other sites More sharing options...
Sharpie Posted July 11, 2003 Share Posted July 11, 2003 When I first took my car out after these mods I thought, Feck this is fast. and thought to myself.....This is how Toyota should have made it from the start. Happy days.... Link to comment Share on other sites More sharing options...
BigRoy Posted July 11, 2003 Author Share Posted July 11, 2003 OK. So once i've done the exhaust, FCD, filter and managed to plumb in my DSBC-iD out of the old ZX, what is a sensible level to run it at 1.2bar? Or can I go higher. I don't mind using Optimax or octane booster if I really have too. Also has anyone got the Blitz DSBC and power iD in their car, if so where have you mounted them? Link to comment Share on other sites More sharing options...
Sharpie Posted July 11, 2003 Share Posted July 11, 2003 You used the word sensible, Hmmmm 1.2 - 1.25bar IMO I think some, maybe JB runs 1.3 on his UK ?? I guess since the limit of the MAF (A little out of my league here now) is between 18-19 psi then I would assume that you have to think about your fuelling if going over the 1.25bar mark ? You also got to think about how long you want the turbos to last, give them more stick and it's natural that they will not last as long. (Turbo timer helps a little here) As for location, I have seen a few with the to ID units taking up the space of 1 DIN, just below the single DIN headunit - assuming that you have replaced the stock Head unit ? I have a pic somewhere....I'll have a look. Anyway, I hope this helps. I'm sure that someone will shoot me down if I am talking complete cr@p. Link to comment Share on other sites More sharing options...
Sharpie Posted July 11, 2003 Share Posted July 11, 2003 Here you are....I hope with kind permission of Flavio Not sure where you could put them if you still have the stock radio Link to comment Share on other sites More sharing options...
Geezabloke Posted July 11, 2003 Share Posted July 11, 2003 Roy Be aware that UK cars DO NOT get the same gain as J spec from the Cat remoavl. I had both cats out and Nur Spec fitted with FCD at same time on my UK. This only produced .8 bar max. OK it felt quicker and spooled a bit quicker but was not the giant leap i was hoping for. The same day i bit the bullet and had a Blitz DSBC fitted, BIG smiles all round..... So you may need your BC fitted at the same time before you get near your 1.2 bar which feels great by the way.....:flame Dev The above is all from personal experience and may not be the samer for all UK specs. Link to comment Share on other sites More sharing options...
michael Posted July 11, 2003 Share Posted July 11, 2003 Argh, FCD, I knew I'd forgotten something important! (CW decats and NuR Spec on the way) Link to comment Share on other sites More sharing options...
ChrisB Posted July 18, 2003 Share Posted July 18, 2003 Originally posted by Geezabloke The same day i bit the bullet and had a Blitz DSBC fitted, BIG smiles all round..... im a bit thick can someone tell me what that is please Link to comment Share on other sites More sharing options...
Sharpie Posted July 18, 2003 Share Posted July 18, 2003 see here http://www.blitz-uk.co.uk/2003/electronics.html Link to comment Share on other sites More sharing options...
ChrisB Posted July 18, 2003 Share Posted July 18, 2003 thankyou Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now