07-11-2015, 07:24 AM | #485 |
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Hi guys - just to let you know I have slightly used Racechip Ultimate for sale. As some of you might remember - suffering from my previous BMW (the N20 528xi) lack of power - I tried different solutions (piggy-boxes from Speedbuster, Racechip etc). This means my unit is an N-engine unit - if someone needs it for the N55 motor it's easy: you just send it to the dealer and they send it back re-programmed, and with new appropriate harness.
Please PM me if interested. EDIT: with the shipping prices of the Polish International Mail Service, I decided to limit my offer to only those living in the EU; otherwise the shipping charges would make the transaction very expensive.
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just sold: 2013 F10 528i xDrive my AWD beater: 2015 Golf R mk7 DSG my RWD pirate & long-distance cruiser: 2015 M235i AT8, LSD Last edited by moldcad; 07-14-2015 at 01:05 AM.. |
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07-11-2015, 12:15 PM | #486 | |
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07-12-2015, 06:28 AM | #487 |
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cold air intake installed!!!
afe stage 2 cold air intake system pro dry s. installation took 45 mins. racechip chip tuning also hidden away behind the intake.
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07-13-2015, 06:03 AM | #489 | |
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07-13-2015, 10:33 AM | #490 | |
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07-15-2015, 11:23 AM | #491 |
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Well, I finally installed racechip ultim 2 weeks ago, and put in some decent fuel on the weekend also
It is superb, PSI reading is at around 13 on my Torque App in upper gears, that sound right? I thought it would send it more in the 14 psi ranges? Besides that , I took out my mate in his 1M with ease yesterday, he now wants to get RC also and re-challenge me... LOL |
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07-15-2015, 01:23 PM | #492 |
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Just added a Fabspeed catted downpipe to the Racechip on setting D. Feels great after short 20 mile drive from shop to work. Best way to describe it is D mode feels like the old Sport mode and Sport Mode is super quick and effortless acceleration.
I will play around with settings and maybe go up to F or so with downpipe now in. Still waiting for 2 months on my Dinan intake order. Anyone thinking catted downpipe isn't worth it, is kidding themselves. It's a different car and the sound is awesome as well without being annoying and without any smell.
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07-15-2015, 01:34 PM | #493 | |
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Quote:
http://www.n54tech.com/forums/attach...1&d=1405363569
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Last edited by kdog26372; 07-15-2015 at 01:35 PM.. Reason: error |
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07-15-2015, 06:43 PM | #494 | |
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Thanks! |
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07-15-2015, 11:45 PM | #495 | |
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I hit a 14.6 psi in 4th l last night, cold temp and prob running around 98 unl octane, felt like I was going to take off... |
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07-15-2015, 11:50 PM | #496 | |
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On mine I can clearly hear the turbo now , seems to be running around 12.3 psi on normal gas but now over 13 with the extra octane... Grip in 1st and 2nd is a big problem, I need bigger rubber at the back, it's a problem... |
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07-16-2015, 10:40 AM | #497 |
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In regards to lag upon re-accelerating, I've experienced this with both JB stage 1 and to a lesser extent the RC Ultimate. I swapped to a hi-flow catted downpipe from Fabspeed yesterday and all that lag is gone and was able to push up to F setting on the RC box; major improvement in power as well as instant power/no lag. I think these tunes need a better downpipe matched with them to get the full benefit of the added boost. No CEL either with the catted downpipe; just RC Ultimate 2 wire tune and catted downpipe.
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07-18-2015, 12:43 PM | #499 |
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I doubt D1 is a good setting for 91 octane and stock downpipe. That was the highest setting I could go with 93 octane and stock downpipe. I'd stick with B or C.
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07-18-2015, 12:45 PM | #500 |
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What would be the most ideal setting for the following:
- intake - ar design hfc downpipe - awe-tuning mid-pipe - awe-tuning exhaust - 94 octane |
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07-18-2015, 05:22 PM | #501 |
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I'm on F setting with 93 octane and fabspeed hfc, all else stock. F runs great for me and should for you, you could maybe try 1 notch or 2 higher, but doubt the midpipe/catback help much along with 1 extra octane. Racechip is a bit of a trial and error with mods product, I suppose elevation and outside temp play factors too. Try D for a tank, move to F for a tank and then go 1 notch at a time until you get hesitations or CEL, then drop down 1-2. I will say the higher the setting the more important it becomes to stay out of sport throttle settings and use moderate acceleration until fully warmed up.
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07-19-2015, 09:09 AM | #502 | |
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I just wanted to contribute to this thread since I picked up RC ultimate few weeks ago for my 2015 X5 35i and at setting S2=B (default setting) I didn't feel much difference initially. I had to drive around for at least 10 miles until I felt the increase in power and torque. After about 500 miles ( took a trip to MD from NJ 200 miles) on setting B, I upped the setting to C for one full tank and immediately felt the gains. I am currently on the next setting D and I feel like the power delivery is smooth and really brings my heavy X5 alive.. Average temperature where I live has been from 83F to lower 90s so far without any issues. Only thing I do notice is that the fan comes on more frequently during WOT and when I drive up steep hills. Last edited by Kzang; 07-19-2015 at 09:24 AM.. |
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07-19-2015, 10:02 AM | #503 | ||||
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07-19-2015, 05:09 PM | #504 |
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Why are there never any before/after 0-60 and 1/4 mile times stock vs. these tunes? I'd pick a chip up in a heartbeat if I knew the performance improvement was there and could be measured.
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07-19-2015, 11:45 PM | #505 |
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