MK5 Golf GTI
General => Random Chat => Topic started by: Gtiain on March 14, 2013, 08:56:41 am
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Stupid question and I think I know what the answer is going to be but here goes. Is there a way of determining the Bhp and torque figures without going on a rolling road???
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You could use the best known process. As in, what are people achieving with similar/same mods to yourself.
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i had a scangauge unit on my old polo. When i got it remapped the guy said it will be 110bhp from 75.
I had the scangauge set to bhp mode, and just floored it in each gear, the number went up to 111.
So im guessing my car was pushing 111bhp
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You could use the best known process. As in, what are people achieving with similar/same mods to yourself.
Thanks, reason I ask is my new gti feels ALOT quicker than my old mk5. I wondered if maybe it had a map on that I didn't know about. However, I bought it from a Vw dealership and would have thought it would have been cleared. Was just seeing if there was a quick way to check bhp. Nevermind ill get it rolling roaded when I get it mapped myself :happy2:
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There is some wizardry that can be done using VCDS I think. Ive yet to try it. :chicken:
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Plot maf and rpm, I've got an excel document that can output the estimated flywheel hp and torque at the sampled VCDS points and outputs a nice little graph :)
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There is some wizardry that can be done using VCDS I think. Ive yet to try it. :chicken:
That would be very interesting if true :happy2:
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Plot maf and rpm, I've got an excel document that can output the estimated flywheel hp and torque at the sampled VCDS points and outputs a nice little graph :)
Sounds promising :notworthy:
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Log the MAF during a 3rd or 4th gear run... find the peak value and divide it by 0.8
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Log the MAF during a 3rd or 4th gear run... find the peak value and divide it by 0.8
:happy2:
Is logging the maf an easy precedure using vcds?
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Yes... log block 003 i think :happy2:
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Yes... log block 003 i think :happy2:
:drinking:
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Here you go matey, right click > save as on this link (http://www.voodish.co.uk/misc/VCDS-Graph-Maker.xlsx)
Open in Excel, when you have your VCDS RPM and MAF data, enter into the Yellow columns, then take a look at your dyno graph :happy2:
Here's one from my Stage 1 Pre-Cat delete:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fwww.voodish.co.uk%2Fmisc%2FGTI-TFSI-Stage1-with_Pre-cat-delete.jpg&hash=e37058d5979c5c93e38aa3e37358e1a41b9f7a7a)
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Here you go matey, right click > save as on this link (http://www.voodish.co.uk/misc/VCDS-Graph-Maker.xlsx)
Open in Excel, when you have your VCDS RPM and MAF data, enter into the Yellow columns, then take a look at your dyno graph :happy2:
Here's one from my Stage 1 Pre-Cat delete:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fwww.voodish.co.uk%2Fmisc%2FGTI-TFSI-Stage1-with_Pre-cat-delete.jpg&hash=e37058d5979c5c93e38aa3e37358e1a41b9f7a7a)
Thanks very much :happy2:
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No probs mate, interestingly from that graph above, the standard GTI makes around 100bhp at 3k RPM and 200bhp at 6k RPM, a simple stage 1 is making 160bhp at 3k, and 200bhp at 4k - The Ed.30's Stage 1 make about 200bhp at 3k! :party:
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Want to give this a go myself. How does the logging work? Do you start logging and then you need a clear (private) road to give it the beans in 3rd and 4th?
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You can log the torque using VCDS then Horsepower = Torque x rpm / 5252.
Probably slightly more accurate than logging the MAF values.