06-06-2012, 11:11 AM | #3 |
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Yes, I'm running it (N54 135i).
It's a strong tune that doesn't compromise drivability at all. Power delivery is absolutely smooth and strong. It's not "boosty" and very linear in it's power delivery. I've done two autocrosses since switching tunes and I've won my class both times and finished very high overall. Both times beating every 1M in the field, btw But the thing I absolutely like the best about the tune is how responsive GIAC is to any question or support and how well they stand behind their product! Definitely highly recommended! |
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06-06-2012, 11:41 AM | #4 | |
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06-06-2012, 11:46 AM | #5 | |
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I did hit limp mode with my previous tune at the track, so it'll be interesting going back with the new tune. |
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06-06-2012, 11:47 AM | #6 | |
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We made this software for track duty, and encourage our customers to run the car hard. Much of the Stage 2 development was done on the Evolution Racewerks 135i, so we simply couldn't risk the car going into limp mode or underperforming in the slightest. |
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06-06-2012, 12:02 PM | #7 | |
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06-06-2012, 12:27 PM | #8 | |
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Berk Technology and Evolution Racewerks both run water-methanol injection on their 135i's. They are running our Stage 2 file, with the optional "Race" file (for 100 octane or 91/93 with 50/50 water-methanol injection). |
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06-06-2012, 01:09 PM | #9 | |
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06-06-2012, 01:29 PM | #10 | |
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since we are talking about OEM downpipes it still has to abide by emission laws for US, even if it may be slightly less restrictive so I think you'll still see an improvement by switching to catless downpipes
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06-06-2012, 01:40 PM | #11 |
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im going to be getting GIAC stage 2 more then likely after I get my ER intercooler next week. I have the akrapovic downpipes and there is for sure a gain, not sure how big till i get it on the dyno.
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06-06-2012, 01:46 PM | #12 | |
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With that being said, there are still gains to be had with aftermarket downpipes. I am not saying that the 1M downpipes are ideal, but they do appear to flow better than the 135i/335i downpipes. You will still see good gains with an aftermarket downpipe on the 1M, just maybe a little less than on another N54 vehicle. We mainly offered the Stage 2 for factory downpipes because they do flow slightly better and many 1M owners want a more stealth car with a factory-sounding exhaust. |
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06-06-2012, 01:50 PM | #13 | |
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Feel free to email or PM me once your new parts arrive, and we can get you taken care of. It's good to hear that you went with the ER intercooler, as we had a hand in its development and can attest to its compatibility with our software. One of the problems with aftermarket intercoolers is that they are actually too big and lead to pressure drop. For the turbos to run efficiently, there has to be a degree of back pressure. With some of these monster intercoolers, we have actually seen pressure drop that leads to the turbos actually working harder to make the same level of boost. In my eyes, the ER intercoolers are an ideal match for the stock N54 turbos. |
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06-06-2012, 04:28 PM | #14 |
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Thomas,
I sent you an email, let me know if you get it. |
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06-06-2012, 04:48 PM | #16 |
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Probably not the right place to ask, but do you know if the ER piece requires any cutting to fit? FYI - I'm OK with some minor cutting. There are quite a few intercoolers on the market right now and I track my car fairly frequently in SoCal so when I'm ready to purchase, I'm looking for a unit that will deliver the most hp/torque and also deal with the heat appropriately under track conditions.
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06-06-2012, 04:49 PM | #17 |
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I believe that a small amount of trimming may be required, however I wont be able to confirm until im in the process of having it installed. I will keep you updated.
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06-06-2012, 05:15 PM | #18 | |
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06-06-2012, 05:33 PM | #19 |
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Thomas any experience with the AA sport inter cooler? Looks to be the same as the ER design one. I just got the AA sport intercooler and was looking to get the AFE STI intake and AR downpipes. Already sold on your software as this is a DD so no worries there =)
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06-06-2012, 05:47 PM | #20 | |
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As for the exhaust, we used the AR Design downpipes on our 1M development car, so I can attest to their power. Our setup used these downpipes with a 3" Borla midpipe. |
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06-06-2012, 11:15 PM | #22 |
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