Cobb Tuning + MAPerformance = Dyno Proven Gains!
Nov 14, 2010, 05:46 AM
#1
Cobb Tuning + MAPerformance = Dyno Proven Gains!
Lets see, where to start...today was a pretty damn epic day. I honestly don't think I've been this excited about car stuff in a LONG time.
Quick back story:
Ever since I got my X tuned back in July I haven't been real happy with it. It drove really well, perfectly smooth, etc., but it was really down on power (especially torque) compared to where it "should" be. What really made that apparent and when I realized I needed to do something is at the NTEC dyno-day last month; my car was getting owned by even basic stock intake/stock catback X's. AFR's were spot on, it took a little timing but not much, and I was just sick of dicking with it.
Last weekend we got the MAP FMIC installed, but yesterday was the big day. First I started it off by installing a Grimspeed 3-port BCS then limped it to Cobb Tuning staying out of boost the best I could.
Yesterday's plan:
1. Completely retune the car with an Accessport at Cobb Tuning - Plano
2. Install MAP o2 eliminator downpipe
3. Retune again for hard back-to-back data on the downpipe
1. Prior tune (stock FMIC w/MBC) vs. Cobb tune (MAP FMIC w/3-port):
2. Downpipe install (please note the care they took, covered everything possible to prevent scratching or damage):
3. Stock o2 housing & downpipe vs. MAP o2 eliminator downpipe:
SOLID GAINS!!! To those who say they're worthless on stock turbo/pump gas setups...eat it
Final runs dyno video:
I want to thank all my friends (especially Scheides and Rmondoh) for their willingness to discuss setups, and special thanks to Rmondoh for taking so many awesome pictures throughout the day! I'm sure he'll jump in here with more of his favorites. I also want to give a huge thank you to the entire crew at Cobb Tuning - Plano! Kevin for getting the video and charts ready so quickly, Calvin for working his tuner magic on my car, and Chris for his eagerness to help facilitate this Accessport Challenge test plus the back-to-back test with the MAP o2 eliminator downpipe.
Quick back story:
Ever since I got my X tuned back in July I haven't been real happy with it. It drove really well, perfectly smooth, etc., but it was really down on power (especially torque) compared to where it "should" be. What really made that apparent and when I realized I needed to do something is at the NTEC dyno-day last month; my car was getting owned by even basic stock intake/stock catback X's. AFR's were spot on, it took a little timing but not much, and I was just sick of dicking with it.
Last weekend we got the MAP FMIC installed, but yesterday was the big day. First I started it off by installing a Grimspeed 3-port BCS then limped it to Cobb Tuning staying out of boost the best I could.
Yesterday's plan:
1. Completely retune the car with an Accessport at Cobb Tuning - Plano
2. Install MAP o2 eliminator downpipe
3. Retune again for hard back-to-back data on the downpipe
1. Prior tune (stock FMIC w/MBC) vs. Cobb tune (MAP FMIC w/3-port):
2. Downpipe install (please note the care they took, covered everything possible to prevent scratching or damage):
3. Stock o2 housing & downpipe vs. MAP o2 eliminator downpipe:
SOLID GAINS!!! To those who say they're worthless on stock turbo/pump gas setups...eat it
Final runs dyno video:
I want to thank all my friends (especially Scheides and Rmondoh) for their willingness to discuss setups, and special thanks to Rmondoh for taking so many awesome pictures throughout the day! I'm sure he'll jump in here with more of his favorites. I also want to give a huge thank you to the entire crew at Cobb Tuning - Plano! Kevin for getting the video and charts ready so quickly, Calvin for working his tuner magic on my car, and Chris for his eagerness to help facilitate this Accessport Challenge test plus the back-to-back test with the MAP o2 eliminator downpipe.
Last edited by Kracka; Nov 14, 2010 at 05:56 AM.
Nov 14, 2010, 02:10 PM
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I'm going to see about talking to Chris @ Cobb and seeing if he and I can work out some kind of deal to do this test and see what the results are.
Last edited by rmondoh; Nov 14, 2010 at 02:13 PM.
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Nov 15, 2010, 07:51 PM
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Nice tune and great write up! I'm still not completely sold on the 02 dp for the hassle and cost, plus I figured I would wait for the turbo upgrade, but looking at those numbers it has me pondering..
Nov 17, 2010, 10:04 AM
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Either way, it's exciting to see results like this as it's quite clear that gains were made even if they were so slight.
Last edited by rmondoh; Nov 17, 2010 at 10:06 AM.
Nov 17, 2010, 10:09 AM
#13
Kracka's test (and also speaking with Cobb Tuning Plano) has he and I wondering (well more me than him) if it's the o2/dp entirely that made the gains. Cobb is standing behind their product saying that only replacing the downpipe portion is the real bottleneck. Probably in the next month or so (assuming I can work out some agreement with Cobb Tuning Plano), we plan to do the same kind of test on my car except using Cobb's downpipe (which bolts onto the stock o2 housing). That should be a good indicator of how restrictive the o2 housing really is. If Cobb's downpipe produce similar gains to Kracka's MAP o2/dp, then I think we can "safely" say that a full 3" downpipe was the difference maker.
Either way, it's exciting to see results like this as it's quite clear that gains were made even if they were so slight.
Either way, it's exciting to see results like this as it's quite clear that gains were made even if they were so slight.
Nov 17, 2010, 10:36 AM
#15
Yup, AMS claims zero gains from a 3" downpipe alone (I believe Buschur backed them up as well). I tend to lean towards AMS' opinion on this one, but I really want to do the test Rmondoh is discussing so I have real dyno proof for my own eyes. The more hard data we all have the better it is for everyone.