MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: Dave_d on May 08, 2017, 12:22:00 pm
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Hi guys, I bought my golf 2 weeks ago and think it's been remapped. It's got a cobra exhaust on it. I'm unsure if it's a cat back or turbo back. How can I tell? Also how do I tell if it's been remapped? She definitely kicks you back in your seat that's for sure, I ran a quick boost log on my way back from the shop
https://ibb.co/j2oQ1Q
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The two spikes are where I changed gear in the dsg. I went from 50 to 120 on my private runway ofcourse
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If it's got an aftermarket exhaust on it, it's very likely been remapped.
Even the standard mapping spikes the turbo a little bit, but going by your numbers, I'd say it's mapped. Need a plot of boost vs rpm and amount in kpa or psi.
You can also tell by reading the ECU with a code reader like VCDS and looking at the flash count. Factory = 0. 1 and above = remapped.
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Is this any better?
https://ibb.co/deHrak
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Sort of. Ideally a full throttle pull in 4th that's longer than a few seconds :smiley:
Either way, a 2 bar spike isn't particularly healthy.
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My cars a dsg, shall I put it into semi auto. Select 4th then foot to the floor for few seconds? I've just left it in D for these logs. I can lose traction in 3rd if I just plant my foot. I believe my app only records in 1 second segments
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I believe logging the MAF sensor (g/sec) doing a full throttle run in 3rd is another good way of estimating BHP.
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Up to redline in 3rd?
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I did a hard pull to redline in 3rd this is what I got. (https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fs628%2FDave_Dicken%2F0FEB7B0E-E4E6-4024-A78A-B2647594B437_zpsa48s33jq.png&hash=2b4cb78e0f12fe8cd981d00b319f7ecf78507699)
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I believe logging the MAF sensor (g/sec) doing a full throttle run in 3rd is another good way of estimating BHP.
This is probably the best way. around 185g/s is right for an ed30 so around 230bhp
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She's had a map then. As she's a gti not an ed30 :wink:
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Result!