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Shiv what type of downpipe map will v2 have?
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09-25-2007, 11:08 PM | #1 |
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Shiv what type of downpipe map will v2 have?
I currently have UR catted downpipes and the stock exhaust, just wondering what your thoughts would be on running the downpipe map that you created for walked u with v2? I will be adding a meisterschaft as soon as it gets here. So a more specific question would be
1. would you use the downpipe map for v2 or 2. would you use the standard v2 map |
09-25-2007, 11:24 PM | #3 |
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09-25-2007, 11:51 PM | #5 |
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Ok...not sure to believe you or not...ha
If its true then they are saying they are giving their customers a shaft upgrade by buying their exhaust, maybe thats how they are justifying the cost! I must say that is a beautiful exhaust in both looks and sound.....VERY NICE!
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09-25-2007, 11:54 PM | #6 |
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I had no cat DP's when i did my dyno tune. Well just free flow exhaust in general. Just 2 straight pipes.
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09-26-2007, 12:23 AM | #7 |
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09-26-2007, 12:27 AM | #8 |
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Previous - E90 335i, E82 135i, E89 Z4 3.5SI, Range Rover S/C, Ultra White RCF, Maserati Granturismo
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09-26-2007, 12:29 AM | #9 |
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+1 good question, i would like to know too...
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09-26-2007, 06:51 AM | #10 |
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Shiv, would it make sense to let the DP map have a slightly increased boost level? Something like 0.5psi or so?
The backpressure is less and one could boost slightly more because of the lesser resistance with no additional heat. |
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09-26-2007, 07:06 AM | #11 |
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it might be possible, but the poor little turbos can only handle about a max of 15 psi...and they can't hold it all the way to top end RPM. I remember reading that the max is either 15 or 17 psi...I believe it is 15.
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09-26-2007, 03:38 PM | #13 |
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Really? is it really that high? I wasn't under that impression...because most of the tuners stay under 15 psi...mostly because of stock hoses, cooling, etc..but also because the turbos lose "gusto" at the higher RPMs.
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09-27-2007, 12:06 PM | #14 |
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they can handle up to 23... after that... heh well you can imagine what happens after that. Looking for consistent reliability? stick with 13-15psi and you should be fine.
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09-27-2007, 04:57 PM | #15 |
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If you don't mind me asking, how much HP do you have to the wheels? I want to go down to AA and get mine custom tuned for my UR catless setup as well. And how much did it cost? PM me with some juicy info
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Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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