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Terry @ BMS
07-21-2007, 10:08 PM
I finally got a chance to do a little dyno testing last week and wanted to share the results. These were on 91 octane, 1.03 CF, auto trans.

http://www.terrytuner.com/JuiceboxV11_Dyno.jpg

http://www.terrytuner.com/JuiceboxV2beta_Dyno.jpg

ATL 335i
07-22-2007, 12:55 PM
that is really high AFR even with direct injection (for 11.25psi) for 91oct

Terry @ BMS
07-22-2007, 01:26 PM
Keep in mind it's being read at the tailpipe and I have cats so it's probably actually around .75pt richer across the board. 11.8:1 was the target AF.

batlin
07-24-2007, 07:47 AM
Just ordered my self one, Cannot wait!

fll335
07-24-2007, 09:48 AM
Good job Terry, On the second run with 11.25 psi the juice box seems to run richer that stock are you changing the AFR in any way.

Thanks

Terry @ BMS
07-24-2007, 10:15 AM
Good job Terry, On the second run with 11.25 psi the juice box seems to run richer that stock are you changing the AFR in any way.

Thanks

Yes, I found that in order to run more than 2psi you must increase the air/fuel ratio or you will induce a lot of knock retard/timing pull. Bad things happen with too much boost and no fuel enrichment.

So for my v2 tuner I increased the air/fuel ratio a little over 1 full pt, and have had great results @ 11psi. I think 11.5psi will be the limit on 91 octane, and 12.5psi on 93 octane. Iím road testing the 12.5psi version right now. =)

fll335
07-24-2007, 10:19 AM
Cool whats the release date on V2.

Terry @ BMS
07-24-2007, 10:25 AM
Cool whats the release date on V2.

We're shooting for 3-4 weeks. I hope to have some updated dyno numbers early next week as well. I'm still waiting for my sponsorship here to go through, but my v1.1 customers will be able to exchange their tuners for 100% credit towards the v2 tuner.

fll335
07-24-2007, 02:49 PM
Again good work, I like to see the Dyno for V2.

fll335
08-02-2007, 04:41 PM
Terry I was going over your instructions for the V1 and I see you no longer say to bypass the second boost solenoid. Why?

Terry @ BMS
08-02-2007, 10:31 PM
Terry I was going over your instructions for the V1 and I see you no longer say to bypass the second boost solenoid. Why?

There is no harm in doing it, but I found at the lower boost level of the Stage 1 (which is basically 1.75psi over stock), it wasn't needed. Once boost starts to get over ~11psi, then the benefit of the bypass kicks in. With my Stage 2 it will need to be bypassed.