Homer Posted May 25, 2007 Share Posted May 25, 2007 Finally the time has come to map my car It's going to be using an Apexi PowerFC with Ryan G mapping it. Other related specs: - Stock head and bottom end (covered around 80k miles) - 800cc Power Enterprise injectors - Stock fuel rail - Aeromotive FPR - Single Walbro - Boostlogic T67dbb I was initially thinking of going for 1.4bar, however a couple of people have said this might be too much for the bottom end. Would 1.2/1.25bar be more sensible? Link to comment Share on other sites More sharing options...
terribleturner Posted May 25, 2007 Share Posted May 25, 2007 From what i remember reading on SF alot of people ran on the stock bottom/internals at 1.4, and im sure had 1.6 . I would gone 1.4 personnally Link to comment Share on other sites More sharing options...
Homer Posted May 25, 2007 Author Share Posted May 25, 2007 Yeah, thats where I got the 1.4 figure from I certianly wouldn't want to run more Most of them seem to have huge fueling systems though, maybe mines not man enough... Link to comment Share on other sites More sharing options...
Steve Posted May 25, 2007 Share Posted May 25, 2007 Isnt Ian C running 1.4 bar for spirited runs. Link to comment Share on other sites More sharing options...
Homer Posted May 25, 2007 Author Share Posted May 25, 2007 Isnt Ian C running 1.4 bar for spirited runs. Yep, but he was one of the guys who recommended I keep to 1.2. The other guy is Ryan G. Maybe a coincidence but why did both mappers say that? Link to comment Share on other sites More sharing options...
terribleturner Posted May 25, 2007 Share Posted May 25, 2007 Yeah, thats where I got the 1.4 figure from I certianly wouldn't want to run more Most of them seem to have huge fueling systems though, maybe mines not man enough... The fuel thing with the yanks always worries me. There's people on there running T88 on 550's etc... Im sure 1.4 is fine, you could go 1.3 but is that 1psi less gonna make a difference to your grin If you have aa boost controller just run it on 1.2 day to day and up it when called for. Link to comment Share on other sites More sharing options...
Marty Posted May 25, 2007 Share Posted May 25, 2007 Dont forget though, the petrol in the states is much better than ours, so higher boost is alot safer to run. Id go for 1.2 personally, but what do i know ... Also depends if you can alter your timing using the ecu, if you cant, defo stick to 1.2 Link to comment Share on other sites More sharing options...
Steve Posted May 25, 2007 Share Posted May 25, 2007 I would go like this Wastgate spring of 0.8bar for wet weather 1.2 bar for everyday use 1.4 bar for Fun Link to comment Share on other sites More sharing options...
stupra Posted May 25, 2007 Share Posted May 25, 2007 Burts t61 was mapped to 1.4 if I remember, and I think he was on standard internals. I was hoping to get mine mapped to 1.4 also, but I won't if it'll go pop !. Link to comment Share on other sites More sharing options...
Kopite Posted May 25, 2007 Share Posted May 25, 2007 Kev Huntley ran 1.6 bar on his 67 on a stock engine for a fair while, mapped by Thor, no problems. Link to comment Share on other sites More sharing options...
mikeyb10supra Posted May 25, 2007 Share Posted May 25, 2007 Why not play it safe and have it mapped for 1.3 and run it conservativly and only up it to 1.3 when feeling fruity Link to comment Share on other sites More sharing options...
Class One Posted May 25, 2007 Share Posted May 25, 2007 As said our cousins from over the pond get away with running higher boost on pump fuel as they have a higher rating. Methinks that their super u/l is equivalent to uk 100 or 102ron (i forget). I think if Ian C recommends 1.2bar for everyday with an option for 1.4 for the odd spirited run, then stick to that. It's a shame that its only just comingitno it's own at 1.4, but having described your reaction from a 0.8bar run, 1.2 -1.4 will be plenty fine. Link to comment Share on other sites More sharing options...
RobSheffield Posted May 25, 2007 Share Posted May 25, 2007 Just out of interest what reasons were given by each for only 1.2? 1.2 with 1.4 for the strip 800cc injectors should be plenty for 1.4, so i doubt its fuelling or octane related. Link to comment Share on other sites More sharing options...
Jake Posted May 25, 2007 Share Posted May 25, 2007 My car was mapped by Turding Japanese up to 1.8 bar but the amount of timing that needed to be pulled at those boost levels on SUL meant that it was barely any quicker than it was at 1.4bar. Also it used worry me to death. Personally, I'd want to run it at a safe 1.2bar for daily use but it would be great if you knew it was going to be alright up to, say, 1.6 with a dash of Toluene. Link to comment Share on other sites More sharing options...
Jake Posted May 25, 2007 Share Posted May 25, 2007 800cc injectors should be plenty for 1.4, so i doubt its fuelling or octane related. Actually I think it's ALL about the octane rating. Even the best fuelling setup can't really compensate for a lack octane. The octane rating is basically the fuel's anti-Det performance rating. Link to comment Share on other sites More sharing options...
Homer Posted May 25, 2007 Author Share Posted May 25, 2007 Thanks for the input gents Just out of interest what reasons were given by each for only 1.2? 1.2 with 1.4 for the strip 800cc injectors should be plenty for 1.4, so i doubt its fuelling or octane related. Ian's reason was that 1.4 is a little too much power for a daily driver, 1.2 bar was enough (Ian has a very similar setup so take his advice very seriously). Ryan's was that 1.4 bar would be too much for a stock engine. When it was TT it was consistently dyno'd at 360rwhp, so I would really like to see over 460rwhp from the single setup. Link to comment Share on other sites More sharing options...
Ryan.G Posted May 25, 2007 Share Posted May 25, 2007 1.4 is fine for spritted runs yes and will map it up to that for when daryl has something difficult to deal with but 1.4 is alot of stress for a standard engine if that boost is run all the time in my opinion and i like to map cars to a standard where there reliability is not sacrificed to much. Also will be sticking the fuel cut at around 1.5bar just in case of any nasty wastegate problems on that well known brand you have . Link to comment Share on other sites More sharing options...
Homer Posted May 25, 2007 Author Share Posted May 25, 2007 Personally, I'd want to run it at a safe 1.2bar for daily use but it would be great if you knew it was going to be alright up to, say, 1.6 with a dash of Toluene. I'm not sure what the PowerFC is capable of in terms of multiple boost maps, but would ideally like to have a setup I can use for race fuel on the few pod days. Need to have a chat with Ryan on Sunday One thing I've found is that 1 bar is too much to get to the road in 1st gear, so really need to set it up so that I can run lower boost in low gears and raise it for 4th upwards. Link to comment Share on other sites More sharing options...
Homer Posted May 25, 2007 Author Share Posted May 25, 2007 Also will be sticking the fuel cut at around 1.5bar just in case of any nasty wastegate problems on that well known brand you have . Cheers Ryan. It's only stuck once so far, but the 1.9 bar I got is enough to kill it rather quickly Link to comment Share on other sites More sharing options...
RobSheffield Posted May 25, 2007 Share Posted May 25, 2007 Actually I think it's ALL about the octane rating. Even the best fuelling setup can't really compensate for a lack octane. The octane rating is basically the fuel's anti-Det performance rating. You misunderstand what im saying I doubt that any decision to run at 1.2 bar was related to octane, after all how would any mapper know what fuel was being used day to day? I am very well aware of what octane means Jake Link to comment Share on other sites More sharing options...
b_have Posted May 25, 2007 Share Posted May 25, 2007 Actually I think it's ALL about the octane rating. Even the best fuelling setup can't really compensate for a lack octane. The octane rating is basically the fuel's anti-Det performance rating. Exactly that. Link to comment Share on other sites More sharing options...
Jake Posted May 25, 2007 Share Posted May 25, 2007 1 bar is too much to get to the road in 1st gear, so really need to set it up so that I can run lower boost in low gears and raise it for 4th upwards. ...or you could use some of the throttle positions between 0 and 100%. I heard there are several of them! Link to comment Share on other sites More sharing options...
wkdtime Posted May 25, 2007 Share Posted May 25, 2007 Homer, the guys in the US mostly run 18 psi on pump, i'd get it mapped to 1.4 and keep it running at 1.2 on the stock bottom IMHO. That's how im running mine. Link to comment Share on other sites More sharing options...
Homer Posted May 25, 2007 Author Share Posted May 25, 2007 Or you could use some of the throttle positions between 0 and 100%. I hear there are several of them You mean the pedal is analogue I know what you mean though It's just a lot easier if I can limit the boost in the lower gears, it'll make feathering the throttle much easier. Ideally RLTC is needed, but I'd rather not switch to traction control until I know how the car 'really' performs Link to comment Share on other sites More sharing options...
Ryan.G Posted May 25, 2007 Share Posted May 25, 2007 ...or you could use some of the throttle positions between 0 and 100%. I heard there are several of them! pmsl One thing I've found is that 1 bar is too much to get to the road in 1st gear, so really need to set it up so that I can run lower boost in low gears and raise it for 4th upwards. Avcr boost controller is your next buy then Link to comment Share on other sites More sharing options...
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