J33LUS Posted October 17, 2006 Share Posted October 17, 2006 Hi guys, My mate has a totally bog standard UK Supra TT 6sp manual and it goes like fook already. What is the best and least expensive way to get more power out of it. I told him an induction kit: Air filter, Decat and Exhaust. Is this correct and how much power do you think he will get out of it? Also, if there is any other advice on engine mods for the car then please let me know. I know it depends on budget, so lets say £1500 Link to comment Share on other sites More sharing options...
Wez Posted October 17, 2006 Share Posted October 17, 2006 Bin the induction kit idea, all you will do is draw in warm engine bay heat. Double decat and boost controller to get it upto approx 1.2bar, no restrictor ring needed on the UK tubbies. Link to comment Share on other sites More sharing options...
Lucifer Posted October 17, 2006 Share Posted October 17, 2006 We do a 450 package for £1650 Fitted. Link to comment Share on other sites More sharing options...
J33LUS Posted October 17, 2006 Author Share Posted October 17, 2006 What is a double decat? What is the standard boost on a UK TT and is it safe for the engine? Any idea on bhp output? Link to comment Share on other sites More sharing options...
Underworld Posted October 17, 2006 Share Posted October 17, 2006 Double decat, is taking out of the two cat pipes. Hence making it a long bit of stainless steel. Standard boost is 0.8? For Jspec not sure if its diff for uk. BHP should be about 370-400 at the fly wheel I would assume. Link to comment Share on other sites More sharing options...
gaz1 Posted October 17, 2006 Share Posted October 17, 2006 would be worth checking the condition of the intercooler when going bpu, going bpu will give him approx another upto 60bhp, and by feck you will notice it bigtime from stock;) Link to comment Share on other sites More sharing options...
J33LUS Posted October 17, 2006 Author Share Posted October 17, 2006 We do a 450 package for £1650 Fitted. Sorry for sounding stupid, but is that at the fly or at the wheels? What is involved? Link to comment Share on other sites More sharing options...
Lucifer Posted October 17, 2006 Share Posted October 17, 2006 That is at the Fly. Over that you woudl be looking at cams and big intercooler. I am just doing the pages for those conversions sir. http://www.mkivstore.com/index.php?target=topics&topic_id=14 Link to comment Share on other sites More sharing options...
J33LUS Posted October 17, 2006 Author Share Posted October 17, 2006 So if I added a double decat and a good exhaust, what sort of power output would I get? Link to comment Share on other sites More sharing options...
Lucifer Posted October 17, 2006 Share Posted October 17, 2006 You could see 400 with some other mods too. Link to comment Share on other sites More sharing options...
J33LUS Posted October 17, 2006 Author Share Posted October 17, 2006 So do you think that is the best route at present? He wants to get as much reliable power out of it for as little cash as possible. The only reason I am so involved is im hoping to buy it off him soon! lol Link to comment Share on other sites More sharing options...
J33LUS Posted October 18, 2006 Author Share Posted October 18, 2006 So what would you guys suggests? Or better yet what would you guys do if it ws your UK TT? Link to comment Share on other sites More sharing options...
Marty Posted October 18, 2006 Share Posted October 18, 2006 What id do is, and i did do. Is buy a double megan racing decat off ebay, you can get these for less than £100 if you keep your peepers peeled, and there is lots on usa ebay. Then get a cat back exhaust, £400, or a 2nd hand one for You'll need some plugs, Ik24 denso's, which are about £50. a Fcd, thor being the best, £65. A boost controller ideally, £250. And a new side mount would be a good idea, not essential, but you would see noticable gains if you got one, as chances are your sidemount is fookered. Miami-gt does these for £300, or you could invest in a fmic, 2row, for about £500. You dont need an air filter as you'll end up sucking hot air into your intake and loosing hp, the standard box is v.well ducted, a replacement panel filter would be ok. You wouldnt be far off 450 then id imagine. So there you go, lots of gee gees, for less than £1200 (inc sidemount) Link to comment Share on other sites More sharing options...
supRo Posted October 18, 2006 Share Posted October 18, 2006 Alot of the UK BPU owners push it to 1.3 bar too Link to comment Share on other sites More sharing options...
Alex Posted October 18, 2006 Share Posted October 18, 2006 Just to re-itterate...don't get an induction kit. 3" exhaust from turbo's to tip + a boost controller such as the SBC-iD from Blitz would be my recommendation. (with an FCD, and spark plugs) Totally agree though that the IC will need inspecting/replacing. Link to comment Share on other sites More sharing options...
Kopite Posted October 18, 2006 Share Posted October 18, 2006 Search for UK BPU on here dude but MPryde's post is spot on. You'll definately need a boost controller on the UK (some people do use bleed valves) but at least with a boost controller you know what you're hitting. I'd also get an EGT gauge just in case. Link to comment Share on other sites More sharing options...
JohnA Posted October 18, 2006 Share Posted October 18, 2006 So if I added a double decat and a good exhaust, what sort of power output would I get? Very close to stock. If boost doesn't go up, don't expect more power. Link to comment Share on other sites More sharing options...
AJI Posted October 18, 2006 Share Posted October 18, 2006 Just as a slight hijack question.... has there ever been an accepted safe BAR value limit for the UK turbos ? 1.3BAR ? 1.4BAR ? The general accepted limit for J-specs is 1.2BAR but haven't read anywhere what it is for us UK-specs. Link to comment Share on other sites More sharing options...
Bobbeh Posted October 18, 2006 Share Posted October 18, 2006 I'd heard of 1.4 bar in the US for select 1/4 mile runs and highway races. Link to comment Share on other sites More sharing options...
Wez Posted October 18, 2006 Share Posted October 18, 2006 At 1.4bar you should check fueling. Although being US/UK you have a MAF so do not need to worry about going over the 1.2bar limitation of the stock MAP sensor. Link to comment Share on other sites More sharing options...
Matt H Posted October 18, 2006 Share Posted October 18, 2006 Double decat, is taking out of the two cat pipes. Hence making it a long bit of stainless steel. Standard boost is 0.8? For Jspec not sure if its diff for uk. BHP should be about 370-400 at the fly wheel I would assume. Yeah on a UK u would see really good gains Link to comment Share on other sites More sharing options...
Marty Posted October 18, 2006 Share Posted October 18, 2006 Yeah on a UK u would see really good gains When i 1st bpu'd my uk spec, i put an apexi boost controller on it, set to 1bar, and a decat+exhaust on. The difference was huge! when the 2nd turbo came online it was soo fast. Plus the noise off the 3" straight thru decat and exhaust was great sounded like a turbo'd v8 Ive noticed a decatted jap spec doesnt sound like this though? im guessing its because of the difference in turbo blades? strange. Link to comment Share on other sites More sharing options...
Matt H Posted October 18, 2006 Share Posted October 18, 2006 When i 1st bpu'd my uk spec, i put an apexi boost controller on it, set to 1bar, and a decat+exhaust on. The difference was huge! when the 2nd turbo came online it was soo fast. Plus the noise off the 3" straight thru decat and exhaust was great sounded like a turbo'd v8 Ive noticed a decatted jap spec doesnt sound like this though? im guessing its because of the difference in turbo blades? strange. Mine are hybrids so sounds even better!! Link to comment Share on other sites More sharing options...
Marty Posted October 18, 2006 Share Posted October 18, 2006 Mine are hybrids so sounds even better!! With steel blades? i know its a strange thing to say, but theres a definate difference in the noise between the both. Bet that sounds awesome if they are steel mate Link to comment Share on other sites More sharing options...
JohnA Posted October 19, 2006 Share Posted October 19, 2006 Just as a slight hijack question.... has there ever been an accepted safe BAR value limit for the UK turbos ? 1.3BAR ? 1.4BAR ?. Let's clear this up once and for all: SAFE is stock. Once you start eating in the safety margins, reliability suffers. And once you have to fit a FCD all bets are off. With the above caveat out of the way, mine are stock UK units, far from new, and they hit 1.6 regularly. However, if you're not sure you know what you're doing, best is to play it safe Also remember that boost pressure is not an accurate indicator of turbo shaft rpm, just a very rough one. Link to comment Share on other sites More sharing options...
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