fastphil666 Posted August 7, 2019 Share Posted August 7, 2019 Hi all, recently purchased a jap tt auto stock ceramics. Has a few good mods, full exhaust and decats, front mount intercooler, autobox cooler, mines ecu, aem afr gauge and wideband etc. Its currently running 15.3psi or just about a bar or so. I have an aem boost controller fitted so is it worth setting my max boost as 17.4 psi, roughly 1.2 bar? Will it be a noticeable boost on power, no pun intended or is it worth leaving it as is? (read safe) Should i take it to a rolling road to do it so they can check everything out injectors etc and fuel pump? Quote Link to comment Share on other sites More sharing options...
Sheefa Posted August 7, 2019 Share Posted August 7, 2019 Hi all, recently purchased a jap tt auto stock ceramics. Has a few good mods, full exhaust and decats, front mount intercooler, autobox cooler, mines ecu, aem afr gauge and wideband etc. Its currently running 15.3psi or just about a bar or so. I have an aem boost controller fitted so is it worth setting my max boost as 17.4 psi, roughly 1.2 bar? Will it be a noticeable boost on power, no pun intended or is it worth leaving it as is? (read safe) Should i take it to a rolling road to do it so they can check everything out injectors etc and fuel pump? Hi congrats. Definitely get those ceramics running 1.2bar, you’ll feel a noticeable difference. Has the fuel pump ever been replaced do you know? If not go for a Walbro 255 or better still a 485 for more headroom at a latter stage. You’ll be on the stock 440cc injectors so can run 1.2 bar fine and that is the recognised limit of the Ceramic J-Spec turbos although others have boosted to 1.4 bar fine......reliability might take a battering though! Get the car down to SRD in Surrey for a through health check and AFR reading on their dyno. Enjoy! Quote Link to comment Share on other sites More sharing options...
fastphil666 Posted August 7, 2019 Author Share Posted August 7, 2019 Thanks for the great reply, im based in north wales so surrey isnt probably my local rolling road. The only thing i dont know if its been upgraded is the fuel pump. The car was owned by alex a member on here and then another member dave, from norfolk. I dont know when the mods were done and if it was before the car was imported? Quote Link to comment Share on other sites More sharing options...
fastphil666 Posted August 7, 2019 Author Share Posted August 7, 2019 Dave= secondjump Quote Link to comment Share on other sites More sharing options...
Alex Posted August 7, 2019 Share Posted August 7, 2019 1.2 bar used to be max for OEM 440cc injectors and Ceramics. Beyond that you're just pushing the EGT's higher. Probably worth getting the injectors cleaned... Quote Link to comment Share on other sites More sharing options...
fastphil666 Posted August 7, 2019 Author Share Posted August 7, 2019 It may well be worth just leaving it alone. Its not exactly slow now to be fair. Just thought if the powers there for free i should use it. Like you say its better to have a running happy engine than potentially melt it for an extra 2psi Quote Link to comment Share on other sites More sharing options...
Sheefa Posted August 7, 2019 Share Posted August 7, 2019 It may well be worth just leaving it alone. Its not exactly slow now to be fair. Just thought if the powers there for free i should use it. Like you say its better to have a running happy engine than potentially melt it for an extra 2psiThe majority of cars are running BPU at 1.2 bar fine mate. If you have or get a boost controller then you can switch between 1 and 1.2 bar when you feel like it for a safer bet. Quote Link to comment Share on other sites More sharing options...
fastphil666 Posted August 7, 2019 Author Share Posted August 7, 2019 Yes i have a aem tru boost controller. Just need to figure out how to use it now. Haha Quote Link to comment Share on other sites More sharing options...
fastphil666 Posted August 28, 2019 Author Share Posted August 28, 2019 Can anyone recomend a good rolling road to set up my boost controller? I would just run it up the road but repeated 120mph 3rd gear runs tend to attract attention. Quote Link to comment Share on other sites More sharing options...
PJJ Posted August 28, 2019 Share Posted August 28, 2019 Seeing as you're in Wales, Garage Whifbitz might be best bet. Quote Link to comment Share on other sites More sharing options...
Noz Posted August 28, 2019 Share Posted August 28, 2019 +1 for whitbiz. Hes looked after me really well. I'd let him set it up. Hes got a wealth of experience. Quote Link to comment Share on other sites More sharing options...
fastphil666 Posted August 28, 2019 Author Share Posted August 28, 2019 Sorry, i should have specified im in north wales, whifbitz is near cardiff. So a 3hour drive for that. Quote Link to comment Share on other sites More sharing options...
Annabella Posted August 28, 2019 Share Posted August 28, 2019 It would be a fun drive tho...... Could have a chat with Chris Wilson he maybe able to help. No PM's PLEASE, use e-mail! Race and performance road car servicing and preparation in north Shropshire. Race and road car engine building and tuning. Suspension development and geometry specialist, Supra work and other cars too! 07971-952084 [email protected] Quote Link to comment Share on other sites More sharing options...
Noz Posted August 28, 2019 Share Posted August 28, 2019 I'm a 3 hour drive as well. I'd drive 10 hours if it meant the car was done spot on. I had a 4 hour train journey to whifbitz first time I collected car when he was in Enfield. The cost of the travel is cheap compared to the priceless value of getting it setup right. Imagine going somewhere local and it costing a fortune if not setup right. Quote Link to comment Share on other sites More sharing options...
Noz Posted August 28, 2019 Share Posted August 28, 2019 A good engine tuner is like a heart surgeon. The specialist doesn't get into town for a few weeks but my mate Dave said there's a banging vet round the corner lol Choose your surgeon wisely if you care for your heart! Quote Link to comment Share on other sites More sharing options...
PJJ Posted August 29, 2019 Share Posted August 29, 2019 Sorry, i should have specified im in north wales, whifbitz is near cardiff. So a 3hour drive for that. I'm a 7hour round trip just to drop the car off, then I travel back down to collect when work is done. The train was really cheap too. If it's a quick job I'd set off early doors and hang around the town down their whilst Dan fixed it. I made the stupid mistake of trusting someone much closer, twice in fact (two different garages, one supposedly a Supra Specialist). I'd never take mine anywhere else other than Whifbitz or SRD. If you try to skimp on cost and travel you'll pay many times over to put it right, just like I did. Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted August 31, 2019 Share Posted August 31, 2019 ATM you have a gun with one bullet in it Raise it too much and your adding another bullet Russian roulette game Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted August 31, 2019 Share Posted August 31, 2019 My car has been running 1.2bar for the last 7 years, runs like a bat out of hell. My low boost map is 0.9bar, car is quick, but 1.2bar is just all that better.. Last dyno was 270wkw on 102 octane..(With Mines ECU) Quote Link to comment Share on other sites More sharing options...
Dnk Posted August 31, 2019 Share Posted August 31, 2019 My car has been running 1.2bar for the last 7 years, runs like a bat out of hell. My low boost map is 0.9bar, car is quick, but 1.2bar is just all that better.. Last dyno was 270wkw on 102 octane..(With Mines ECU) Go out in 600 + single Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted August 31, 2019 Share Posted August 31, 2019 Go out in 600 + single Fair enough... my comments are relative to 1.0bar to 1.2bar.. I hope to own a 600hp Supra, budget willing... Quote Link to comment Share on other sites More sharing options...
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