X1 0-60 mph, 0-100 kph, 1/4 mile, 60-130 mph, 100-200 kph, 1/2 mile results

[1nastyx1]

Originally Posted by Turbod

Is Steven the one tuning your car? Ken tuned my 335i a few years ago. I told him I wanted to build more boost on launch and after he made some changes I was able to leave on 15 psi in 2nd gear. I usually left around 12 psi since anything over that would result in spinning. Just leaving on more boost should get you down to around 11.7.

Yes, Steven is doing the tuning. That's great to know they were able to turn the boost up on the launch, that's exactly what lacking right now! Leaving on only 4psi and the slower spool of the PS2, it dogs off the line for being an AWD car lol.

[X135i]

Originally Posted by Turbod

I will start.

1.) N55 35i xDrive
2.) JB4 map 6 running 12 psi flat, BMS intake, ER chargepipe.
3.) 92 octane (US) pump gas.
4.) Stock style 225 19 inch wheels with Michelin Pilot Sport A/S 3+
5.) Dragy was used for the results.

So far 0-60 is at 4.73 and the 1/4 mile is 13.19 @ 102 mph.

Attachment 1951796Attachment 1951797

Hi Turbod can you send me a DM. Thx

[wheela]

I'll go ahead and contribute to the cause:

1) N55 35i x-drive m-sport
2) VRSF charge pipe, Wagner EVO 1 intercooler, xHP stage 2, MHD stage 1 plus, 93oct ver. 1.60
3) 93 oct Amaco Ultimate
4) stock 18" m-sport rims with stock run-flats
5) Results taken with dragy
6) Brake boosted start (not just mashing the gas)

[wheela]

Originally Posted by NocheDeZippeh

1.) N55 35i M Sport
2.) JB4 Custom Map 6 (17.5 psi peak), BMS PUMP2 BEF, CP, FMIC, xHP stg. 2
3.) E25 plus one can of Boostane Premium
4.) 18x9 et31 Apex EC-7, Michelin PS4S 245/40
5.) Dragy

1/4 mile = 12.43 @ 109.36
0-60 = 4.15 (3.95 with 1' rollout)

About two weeks ago I finally hit 100K miles. To celebrate, I was able to take advantage of some very cool and dry weather (DA was -1000 ft) to see what effect it (and the added octane from the Boostane) would yield. I can now say I've got a sub-4 second 0-60 and mid-12 second 1/4 mile car. Not too shabby for the ol' beast!

NocheDeZippeh, I just realized I don't see a downpipe in your list of mods for this run, were these results with the oem catted downpipe?

[NocheDeZippeh]

Yes, still on the factory downpipe. The oem dp apparently doesn't present a big restriction to the small stock N55 turbo, as evidenced by the small power gains seen on the dyno when going catless. Plus, it looks to be a pretty big pain in the arse to remove/install the dp on xdrive cars. I think a dp would only net me maybe 0.1-0.2 sec of ET and 1-2 mph trap (if that) in the 1/4. To make substantial improvements, I'd need to move to a PS2 and upgraded HPFP, at which point a catless dp would be basically mandatory.

Now if I were regularly hammering the car for 20 minutes straight on a track, doing 1/2 mile events, or lots of 1/4 miles, it would be a different story. But for my fairly modest goals, the factory dp has been adequate.

[wheela]

Originally Posted by NocheDeZippeh

Yes, still on the factory downpipe. The oem dp apparently doesn't present a big restriction to the small stock N55 turbo, as evidenced by the small power gains seen on the dyno when going catless. Plus, it looks to be a pretty big pain in the arse to remove/install the dp on xdrive cars. I think a dp would only net me maybe 0.1-0.2 sec of ET and 1-2 mph trap (if that) in the 1/4. To make substantial improvements, I'd need to move to a PS2 and upgraded HPFP, at which point a catless dp would be basically mandatory.

Now if I were regularly hammering the car for 20 minutes straight on a track, doing 1/2 mile events, or lots of 1/4 miles, it would be a different story. But for my fairly modest goals, the factory dp has been adequate.

Thanks for your response! Well, I actually got my catless downpipe installed on Friday. I thought it felt like a more noticeable improvement than going from stock to MHD stage 1 plus. Just confirmed it with a 4.84 0-60 time, shaved off 0.31 seconds from with the stock catted unit! Nothing else changed, it's even on the same tank of gas I'll have to go to stage 2 plus now and see what that gets me.

[NocheDeZippeh]

Wow - very nice gains

Just wait till you try the stage 2+ e30 map!