[switlikbob]

Originally Posted by FSociety

...going flash tune tomorrow with map switching (stock, 93, e85 blend map etc).

Who are you using? Enzo? RK? Supporting mods?

[switlikbob]

Any new data / experiences with the JB+?

[FSociety]

switlikbob going to ATCO tomorrow Black Friday
I have Bootmod3 N55 Beta Map, V2 & V3 to see what it will run but so far logs look great and im excited

[switlikbob]

Originally Posted by FSociety

switlikbob going to ATCO tomorrow Black Friday
I have Bootmod3 N55 Beta Map, V2 & V3 to see what it will run but so far logs look great and im excited

Shoot me a PM and / or post here with results please

[serrated]

would you really gain anything with JB+ over just stock tune and 93 octane pump gas?

[zenmaster]

Originally Posted by serrated

would you really gain anything with JB+ over just stock tune and 93 octane pump gas?

With a constant lower manifold pressure reading, gains should be noticeable at least at lower RPMs. So the short answer is yes. However, we still don't know how much, if any, gain at 6K+ RPM where peak power is made. Does the JB+ consistently indicate plausible readings? This is important for avoiding CELs.

To find out gains, I'd recommend 3 baseline Dynojet pulls w/o the device, then at least 50mi of adaptation with device including 5 or more WOT runs, then 3 more pulls on same Dynojet. Would be good to also log your IAT. These 2 sessions would cost me around $100, for example.

[twin fed]

I would definitely say that there is a noticeable difference, especially in Sport+. I am enjoying it. Well worth the money.

[FSociety]

Originally Posted by twin fed

I would definitely say that there is a noticeable difference, especially in Sport+. I am enjoying it. Well worth the money.

Are you going to Dyno it ?

I have some friends going to Dyno soon in Long Island if you want to join them (m235 cars) so would also be good to compare.

[twin fed]

Originally Posted by FSociety

Are you going to Dyno it ?

I have some friends going to Dyno soon in Long Island if you want to join them (m235 cars) so would also be good to compare.

Where are they going?

[FSociety]

Originally Posted by twin fed

Where are they going?

Luminous bryan_f22 Vinny Ten Racing in Lindenhurst (Dynojet)

There's also Chameleon Tuning, Speed World Baldwin, Petrolwerks who also have Dynojet.

[six-n-twins53]

Anyone still running JB+ on their M2? What level? Any problems?

[NOLAGUY]

I have the JB+ , fabspeed 200 cell cat and Wagner intercooler sitting in my garage. I have baseline dyno runs scheduled for the 20th. I'll drive it a couple weeks with mods and dyno again. I'll start my own thread as soon as I get my data.

[zenmaster]

Originally Posted by six-n-twins53

Anyone still running JB+ on their M2? What level? Any problems?

I will try the JB+ soon. Not going to bother with a baseline dyno because of the historical consistency between all the stock M2 Dynojet pulls posted here. I expect a 10-15whp gain on 93 for an otherwise stock car.

My Dinan Sport was DOA and had to be returned, plus the plastic connector tab was too flimsy. They really need quality control.

[wakeofdeath]

Originally Posted by zenmaster

I will try the JB+ soon. Not going to bother with a baseline dyno because of the historical consistency between all the stock M2 Dynojet pulls posted here. I expect a 10-15whp gain on 93 for an otherwise stock car.

My Dinan Sport was DOA and had to be returned, plus the plastic connector tab was too flimsy. They really need quality control.

Don't take this the wrong but
Don't bother doing another pointless dyno without a baseline, every car is different and no car is historically the same. If you're already taking the trip to the dyno, the dyno operator wouldn't kill you for (using Dinan App to disable the piggy and last run as a baseline) will serve more purpose than folks continuing relying on someone else baseline numbers.

[zenmaster]

Originally Posted by wakeofdeath

Don't take this the wrong but
Don't bother doing another pointless dyno without a baseline, every car is different and no car is historically the same. If you're already taking the trip to the dyno, the dyno operator wouldn't kill you for (using Dinan App to disable the piggy and last run as a baseline) will serve more purpose than folks continuing relying on someone else baseline numbers.

I don't think that method is a good idea if you want accurate performance numbers, as the car would not have had a chance to adapt back to nominal levels between pulls. It's fine to do the baseline afterwards. However, to do such a baseline run properly, you'd want to leave, drive with WOT several times and plenty of miles and then come back. In other words, your suggestion would be just as "bad" as not doing the baseline.

[FSociety]

Originally Posted by zenmaster

I don't think that method is a good idea if you want accurate performance numbers, as the car would not have had a chance to adapt back to nominal levels between pulls. It's fine to do the baseline afterwards. However, to do such a baseline run properly, you'd want to leave, drive with WOT several times and plenty of miles and then come back. In other words, your suggestion would be just as "bad" as not doing the baseline.

I think what he means is pretty accurate and everyone does this.
Your last run with dinan+ off will serve well as a Baseline run since you're already doing your first 2-3 runs with piggy enabled/on (

[zenmaster]

Originally Posted by FSociety

I think what he means is pretty accurate and everyone does this.
Your last run with dinan+ off will serve well as a Baseline run since you're already doing your first 2-3 runs with piggy enabled/on (

I get what he's saying, but the BMW DME has fuel trim adjustments which will probably cause it to run richer on that 3rd pull. Am I wrong?

[SeanWRT]

Originally Posted by zenmaster

I get what he's saying, but the BMW DME has fuel trim adjustments which will probably cause it to run richer on that 3rd pull. Am I wrong?

DME runs open loop on WOT, not using pre cat o2 sensor's feedback. AFR instantly goes fine without JB+.

With JB+ and the likes, DME is constantly adjusting STFT to the boost it sees which is lower than real. Therefore the system is always running lean. Which may or may not hurt timing. Just a matter of how much off AFR goes, in other words, of how much you boosted it without controlling other parameters.

[zenmaster]

Originally Posted by SeanWRT

DME runs open loop on WOT, not using pre cat o2 sensor's feedback. AFR instantly goes fine without JB+.

With JB+ and the likes, DME is constantly adjusting STFT to the boost it sees which is lower than real. Therefore the system is always running lean. Which may or may not hurt timing. Just a matter of how much off AFR goes, in other words, of how much you boosted it without controlling other parameters.

That's what I dont get. On the BMW, you can get MAP which is where boost is derived. But the sensor being controlled is MAF is an independent measurement of a rate of flow per adjusted for air density. In other words, the DME should always see the actual boost in the manifold.

[twin fed]

Originally Posted by six-n-twins53

Anyone still running JB+ on their M2? What level? Any problems?

I am running it cranked up all the way and have had no issues so far. I also just installed the Fabspeed HFC and Love the combo with the Dinan resonator delete. The sound is insane.

[zenmaster]

twin fed Any problems with the JB+ on max?

[switlikbob]

I'm going to have the dinan sport tuner, fabspeed cat DP (if they ever ship the damn thing to me), and dinan resonator delete. Seems like a lot of guys are going this route. I had the jb+ but ended up selling it because I really like the blue tooth capability.