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      01-31-2016, 04:46 PM   #1
CT335xi
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Tunes -Racechip or BMS stage 1?

I'm debating over which tune to get for my x3 35i? Not looking for which one makes the most power but the one that has the best drivability and no issues. I would like to hear from others that have experience with either or both tunes.


Thanks John
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      01-31-2016, 07:46 PM   #2
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Ditto
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      02-02-2016, 10:56 PM   #3
Howie Dub
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I have the Racechip Ultimate and haven't had any issue thus far (knock on wood). I've driven over 1K miles on the "2" setting, which is seven settings above the stock setting it's shipped with. What's odd was on the "1" setting, it ran rough, but has been much smoother in "2". I'm guessing it has something to do with the air/fuel ratio. I also have an AFE Magnum FLOW Pro Dry S air filter installed.

It's been pretty responsive when needed. Smooth in Comfort mode and power delivery feels pretty linear. It's peppy in Sport and Sport+, although power doesn't feel as linear. I usually have it set to Sport+ with the shifter in D/S. I've hit 0-60 in 4.9 sec using the BMW Laptimer app on the iPhone.
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2016 X3 35i Carbon Black Metallic, Black interior, 20" wheels, M Sport, Premium, Tech, Cold Weather, & Drivers Assistance packages
2011 Toyota Sienna Limited AWD Predawn Gray Mica, Ash interior
2005 X5 4.4i Sterling Gray Metallic, Black interior, 19" wheels, Sport, Premium, Cold Weather packages.

Last edited by Howie Dub; 02-02-2016 at 11:09 PM..
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      02-03-2016, 04:48 AM   #4
CT335xi
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Quote:
Originally Posted by Howie Dub View Post
I have the Racechip Ultimate and haven't had any issue thus far (knock on wood). I've driven over 1K miles on the "2" setting, which is seven settings above the stock setting it's shipped with. What's odd was on the "1" setting, it ran rough, but has been much smoother in "2". I'm guessing it has something to do with the air/fuel ratio. I also have an AFE Magnum FLOW Pro Dry S air filter installed.

It's been pretty responsive when needed. Smooth in Comfort mode and power delivery feels pretty linear. It's peppy in Sport and Sport+, although power doesn't feel as linear. I usually have it set to Sport+ with the shifter in D/S. I've hit 0-60 in 4.9 sec using the BMW Laptimer app on the iPhone.
Howie Dub thanks for the reply!
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2022 x5 m50i - Dravit grey
2005 evo 8 (current) built 2.3 488/409 mustang dyno
Old stable mates - 87 325i, 88 m3, 90 m3, 97 m3 4dr,
04 325xi, 91 gmc Syclone, 08 335xi, and 13 x3 35i msp
2014 x5 50i msport
Appreciate 0
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