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Turbo Technics S280
- Thread starter ROCKYFiestta
- Start date
Probably wrong MAP, don't use 5 bar MAP sensor for 3.5 bar MAP tune. You can get a tune for a 5 bar MAP too. No need to change the 5 bar for 3.5 bar sensor unless you want to spend extra money. If you see 0-75 PSI on the sensor's label, it's a 5 Bar MAP sensor. I was looking at the FoST thread about it and they never get to the conclusion on the problem.
My simple build (S280 with 14 PSI TM wastegate, XDI hpfp30, 30% upgrade injector, 1 step colder spark plugs, 3.5 Bar MAP, and V3 intercooler) yielded about 370+ WHP on 28 PSI on vdyno with e50 tune (60 degree F run). I will probably get about 20 WHP with a downpipe per tuner. Will be something to consider in the future, now the car is scary fast (3.5k to 7k RPM). GAPPING 5.0s and SS; they still got me on 0-60 though and there is nothing I can do about it.
My simple build (S280 with 14 PSI TM wastegate, XDI hpfp30, 30% upgrade injector, 1 step colder spark plugs, 3.5 Bar MAP, and V3 intercooler) yielded about 370+ WHP on 28 PSI on vdyno with e50 tune (60 degree F run). I will probably get about 20 WHP with a downpipe per tuner. Will be something to consider in the future, now the car is scary fast (3.5k to 7k RPM). GAPPING 5.0s and SS; they still got me on 0-60 though and there is nothing I can do about it.
You may already be aware, but (leaded) 116 fuel will fairly rapidly degrade your O2 sensor and cause it to drift, messing up your AFR’s (fortunately towards rich, not lean)
Leaded fuel is not just a cat-killer, so even running no cat doesn’t make it safe to run. Best to stick to unleaded race fuel (usually 100 octane) unless you plan to replace your O2 sensor every couple weekends. Leaded is basically only for carburated engines, or race teams that do teardowns.
Unleaded up to 109 exists, but 100 is likely the best you’ll find at a pump.
Leaded fuel is not just a cat-killer, so even running no cat doesn’t make it safe to run. Best to stick to unleaded race fuel (usually 100 octane) unless you plan to replace your O2 sensor every couple weekends. Leaded is basically only for carburated engines, or race teams that do teardowns.
Unleaded up to 109 exists, but 100 is likely the best you’ll find at a pump.
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![[driving]](/images/smilies/icon_smile_driving.gif "Driving [driving]"){kind=icon}
our cars are speed limited to 147 mph that was tested years ago by a guy on the Autobahn it’s also been mentioned here in the U.S. i doubt anyone is doing 150 or 160 I would possibly attribute that to inaccurate speedo readings due to changes in wheels and tires from the. stock setup . If not I would say something else is off.
It felt pretty stable on that 4 miles stretch of newly fixed road in Mexico, I was using Uniden R4 to monitor my speed and it was at that speed for a good 5 seconds after my speedometer max out before I let go of the gas. I maxed out on speedometer on 6th with 1000 RPM to spare (No changes in speed on radar to redline at 7.2k). I am currently tuning with a different tuner at the moment after installing a Whoosh catted 3" downpipe, still on base tune for 91 oct running 16 PSI max LOL. Hopefully, I will be able to add 10-20 HP with the downpipe when all said and done. Previous tuner did said that the stock downpipe was the culprit (limiting factor) for the turbo. I will GoPro it next time when I run again.
![[wink]](/images/smilies/wink.gif "Wink [wink]")
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