Supra-Iceman Posted March 23, 2007 Share Posted March 23, 2007 Hi! If you boost from 1Bar to 1.2Bar how much Bhp can you expect ? Its a Jspec supra Mkiv! Thanks in advance! Link to comment Share on other sites More sharing options...
wkdtime Posted March 24, 2007 Share Posted March 24, 2007 30 BHP'ish, I go by 15HP per 0.1 Bar. Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 24, 2007 Share Posted March 24, 2007 In an ideal world 10 BHP per 1 PSI but it rarely works that way;) Link to comment Share on other sites More sharing options...
Mike B Posted March 24, 2007 Share Posted March 24, 2007 By BPU's definately felt significantly quicker at 1.2 than 1. It's worth the jump.. especially in 4th and 5th. I'd have said a bit more than 20hp, maybe 40..? The biggest difference in my bpu was FMIC, overpowered the clutch on my first car straight away.. the difference was staggering. Link to comment Share on other sites More sharing options...
MarkTheBoy Posted March 25, 2007 Share Posted March 25, 2007 By BPU's definately felt significantly quicker at 1.2 than 1. It's worth the jump.. especially in 4th and 5th. I'd have said a bit more than 20hp, maybe 40..? The biggest difference in my bpu was FMIC, overpowered the clutch on my first car straight away.. the difference was staggering. Does it really make such a staggering difference? I didn't realise how much an intercooler mattered. Link to comment Share on other sites More sharing options...
Getrag Posted March 25, 2007 Share Posted March 25, 2007 Yeah, interesting to know that. Link to comment Share on other sites More sharing options...
Scoboblio Posted March 25, 2007 Share Posted March 25, 2007 Mine felt significantly better when I installed a FMIC... BUT that was from a knackered old SMIC. I'm sure I would've felt the same difference going over to a brand new SMIC too. Link to comment Share on other sites More sharing options...
Nic Posted March 25, 2007 Share Posted March 25, 2007 I didn't feel a huge difference when I fitted my HKS Type R intercooler when BPU, there was a noticeable difference, but not big. It would depend what condition your old IC was in before fitting, mine was in relatively good condition. Fitting HKS Cams (in256/ex264) gave a noticeable improvement in torque mid to high rpms at BPU levels. The one mod that made a big difference for me at BPU levels, was fitting an emanage, good gain in power. Link to comment Share on other sites More sharing options...
Supra-Iceman Posted March 25, 2007 Author Share Posted March 25, 2007 I didn't feel a huge difference when I fitted my HKS Type R intercooler when BPU, there was a noticeable difference, but not big. It would depend what condition your old IC was in before fitting, mine was in relatively good condition. Fitting HKS Cams (in256/ex264) gave a noticeable improvement in torque mid to high rpms at BPU levels. The one mod that made a big difference for me at BPU levels, was fitting an emanage, good gain in power. What is "emanage" ? Link to comment Share on other sites More sharing options...
AlanM Posted March 25, 2007 Share Posted March 25, 2007 Fuel Management System, search under emanage and it will come up with loads of stuff Link to comment Share on other sites More sharing options...
MarkTheBoy Posted March 25, 2007 Share Posted March 25, 2007 Mine felt significantly better when I installed a FMIC... BUT that was from a knackered old SMIC. I'm sure I would've felt the same difference going over to a brand new SMIC too. Didn't realise you had a front mounted, how did I never notice that before? Did you have to lose the front spoiler or is it still fitted? Link to comment Share on other sites More sharing options...
Mike B Posted March 25, 2007 Share Posted March 25, 2007 My old side mount must have been on it's way out as I would say that the blitz LM intercooler I put in from Envy made as much power increase as going from stock to bpu.. it really was staggering. It's not just the intercooler; it's the hardpipe too, and the diameter changes designed to get the air as cold as possible. Link to comment Share on other sites More sharing options...
MarkTheBoy Posted March 25, 2007 Share Posted March 25, 2007 My old side mount must have been on it's way out as I would say that the blitz LM intercooler I put in from Envy made as much power increase as going from stock to bpu.. it really was staggering. It's not just the intercooler; it's the hardpipe too, and the diameter changes designed to get the air as cold as possible. Hmm... interesting. How much did it cost you? I was thinking of just going for a miami GT smic but if the gains are this good I might have to go with what you have. #goes off to smash up piggy bank# Link to comment Share on other sites More sharing options...
tDR Posted March 25, 2007 Share Posted March 25, 2007 Gotta say when we fitted my GReddy 3-Row FMIC my BPU car instantly felt much more 'alive'. My SMIC was in good condition and was sold on in the classifieds. Cheers, Brian. Link to comment Share on other sites More sharing options...
Getrag Posted March 25, 2007 Share Posted March 25, 2007 I didn't feel a huge difference when I fitted my HKS Type R intercooler when BPU, there was a noticeable difference, but not big. It would depend what condition your old IC was in before fitting, mine was in relatively good condition. Fitting HKS Cams (in256/ex264) gave a noticeable improvement in torque mid to high rpms at BPU levels. The one mod that made a big difference for me at BPU levels, was fitting an emanage, good gain in power. Interesting to note. Sounds like a good stage after BPU would be FMIC/Cams/management. That would give a satisfying increase in power, while not as expensive as going the full single route. It would also future proof nicely. One question though is would this be pushing the 440's a little too far? Link to comment Share on other sites More sharing options...
tDR Posted March 25, 2007 Share Posted March 25, 2007 Interesting to note. Sounds like a good stage after BPU would be FMIC/Cams/management. That would give a satisfying increase in power, while not as expensive as going the full single route. It would also future proof nicely. One question though is would this be pushing the 440's a little too far? I don't think so... the car is plenty rich with FMIC at 1.25 bar, low 10:1 range AFR's. That's why the management is a good gain - you can trim a good bit of fuelling out and gain around 20 WHP. This is what I'm currently in the process of doing fitting my MAP2 / road mapping. I'm deliberately avoiding cams as I'm not sure they're necessary before going single - will see what times I get on the strip and compare with Monkey Mark and the others ahead of me in the top 5 as they're all running cams. Cheers, Brian. Link to comment Share on other sites More sharing options...
Getrag Posted March 25, 2007 Share Posted March 25, 2007 Thats reasuring. I guess its all in the tuning. Although you dont think cam's are necessary without single, do you think they would give any benefit to BPU with management? Link to comment Share on other sites More sharing options...
tDR Posted March 25, 2007 Share Posted March 25, 2007 I think you'd just be shifting the 'meat' of the power further up the rev range. I don't think cams are good VFM unless you drastically alter the airflow characteristics of the engine IE completely different turbo setup... Cheers, Brian. Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted March 25, 2007 Share Posted March 25, 2007 So how far can the 440's go ?? Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted March 25, 2007 Share Posted March 25, 2007 and also can you trim using safc2. also would i rwally need a wideband afr setup? Link to comment Share on other sites More sharing options...
tDR Posted March 25, 2007 Share Posted March 25, 2007 So how far can the 440's go ?? Into the intake runners Link to comment Share on other sites More sharing options...
Homer Posted March 25, 2007 Share Posted March 25, 2007 So how far can the 440's go ?? There's no hard and fast rule as every car is different (they're old motors now so components are worn differently between different engines) and also can you trim using safc2. also would i rwally need a wideband afr setup? Now you're on the right track Yes, you can trim using the SAFC2 and you would need a good AFR gauge to do so. IME you could trim a little out at higher rpm to get a *little* more power, but would need to add some around the #2 spool up point. Link to comment Share on other sites More sharing options...
Ian C Posted March 26, 2007 Share Posted March 26, 2007 1bar to 1.2bar on a basic BPU gives a good increase in power for two reasons. One, you put in 10% more air. Two, you lean the mixture off by doing this, as the 440's are flat out 100% anyway at 1bar. 440s can run 1.2bar no problem, so until you get hybrids or a single, they are fine. Cams do give good results up top on stock turbo setups, I'd put them in, stops it feeling all choked up above 5500rpm and pulls hard to the redline. I'd go 256/264 on stocker based setups and the same or 264/264 on singles. -Ian Link to comment Share on other sites More sharing options...
tDR Posted March 26, 2007 Share Posted March 26, 2007 Cams do give good results up top on stock turbo setups, I'd put them in, stops it feeling all choked up above 5500rpm and pulls hard to the redline. I'd go 256/264 on stocker based setups and the same or 264/264 on singles. -Ian That's good to note Ian. Perhaps I'll do what I'm doing now then go for cams and see what difference it makes to my times. Everywhere I go seems incapable of RR'ing autos so 1/4 ET's and terminals are my only indicators of what works and what doesn't. That 'choked up' reference above, I found fitting my GReddy 3-Row acheived this difference in itself - pulled noticeably harder to the redline. You ran 256/264 combo and then 264/264 combo on your single didn't you? Was there much gain or loss in specific areas of the RPM range going from the 256 to the 264 inlet cam? Cheers, Brian. Link to comment Share on other sites More sharing options...
Ian C Posted March 26, 2007 Share Posted March 26, 2007 That 'choked up' reference above, I found fitting my GReddy 3-Row acheived this difference in itself - pulled noticeably harder to the redline. Even with an FMIC and hybrids I found that putting the cams in made a noticeable difference above 5500rpm, and I can't say I felt any loss down low. You ran 256/264 combo and then 264/264 combo on your single didn't you? Was there much gain or loss in specific areas of the RPM range going from the 256 to the 264 inlet cam? Actually I'm still on 256/264 I tried the ghastly 272/264 setup (272 cam for sale, you bastards!) and couldn't get back to 256/264 fast enough. I've mapped cars with 264/264 and can't say I've noticed much of a difference either way from the datalogs or passenger seat. -Ian Link to comment Share on other sites More sharing options...
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