Stock v Dinan2 v JB3 - my dyno results

[135iCab]

Here are my dyno results on my 135i (AT step) (no other mods) with Dinan Stage 2 and JB3 (Maps 3 and 5) on the same dyno a couple of weeks apart together with a stock baseline. The only difference is that the JB3 runs were using Sunoco Ultra 94 gas (to enable Map 5) whereas Stock and Dinan were using Shell V-Power 91.

For each tune, I selected the highest max HP run. There were 3 stock runs, 4 Dinan2 runs and 2 runs each for JB3 Maps 3 and 5.

I previously posted my Dinan/baseline dyno results and was initially not very excited by the Dinan gains, but the final straw for me was when I took the car to the track. The car would lose power after just 3 or 4 laps, then after a few corners it'd come back online (no CEL). I asked Dinan to check my car and they told me that a fault code was generated from the software that detects aggressive driving and backs off the power to (quote) "protect the brakes"!! Dinan gave me a full refund.

It seems to me that Dinan is probably protecting their warranty liability as a couple of weeks earlier I did 2 hours at the track in 20-minute sessions while I was stock and there was never any power loss like this. If anything, oil temps were lower when the Dinan software shut down my power.

This is no Dinan bash, I still understand and support anyone going the Dinan route as I initially chose it myself. I would say its a moderate tune and I doubt anyone taking their car to a road circuit will be impressed, if they have the same experience I've had. But, that's just my experience for what it's worth.

The dyno results speak for themselves. But, from the raw data extracted, the average gains over Stock were:

Dinan Stg2: +31.4 WHP & +34.1 WTQ
JB3 on Map3: +40.4 WHP & +42.8 WTQ
JB3 on Map5: +54.4 WHP & +58.9 WTQ

My experience FWIW

[MrBlonde]

Great to see some dyno results

[NewYearsBoy]

DAMN... Dinan just gave a extra 30 hp???? I thought you would be up by 350 or 360 hp.... Thats a lot of cash for 30hp..... Did u just have the car tuned??? or anything else....

I really want to do Dinan...

[acivick]

Interesting results, pretty much what I figured. Difference between the Dinan Stage 2 and map 3 is not really significant in my opinion (like adding an exhaust), and I would be curious to see how the upgraded intercooler and oil cooler would affect things. Also nice to see the Dinan tune pretty close to map 5 between 4k and 5k rpm, which is really the sweet spot.

Though this is the best independent comparison I have seen, I can't help but wonder if the gap would have closed in a bit more if the same quality of fuel was used. Probably only 1-3hp or so, but that actually makes a difference when you're talking 9hp overall with map 3.

Anyway, thanks for posting some good actual numbers!

[135iCab]

Originally Posted by Stoutnj89

DAMN... Dinan just gave a extra 30 hp???? I thought you would be up by 350 or 360 hp.... Thats a lot of cash for 30hp..... Did u just have the car tuned??? or anything else....

You won't get that kind of wheel horsepower from a tune alone (dynos measure power at the wheels (WHP), whereas manufactures quote engine HP (BHP). Perhaps, you are thinking BHP? Now assuming a 15% loss through the transmission (AT) then:

Stock = 314 bhp (267 whp / 0.85)
Dinan Stg2 = 356 bhp (303 whp /0.85)
JB3 Map3 = 369 bhp (314 whp / 0.85)
JB3 Map5 = 388 bhp (330 whp / 0.85)

There were no other dyno performance enhancing mods: I just have Nitto NT05 tires, cool carbon brake pads and titanium brake shims). I plan to get other mods later.

Peak power on the Dinan is +36 WHP over Stock, which is a bit lower than I expected too.

[135iCab]

Originally Posted by acivick

Difference between the Dinan Stage 2 and map 3 is not really significant in my opinion.

In terms of feel, I agree: the power from the JB3 on Map3 feels quite similar to Dinan Stg2. Dinan, though, has an annoying lag when you push the gas and delivers the power in one lump at 4k and then tapers off. I can't tell you if that lump is typical, but its what I'm experiencing.

Originally Posted by acivick

Also nice to see the Dinan tune pretty close to map 5 between 4k and 5k rpm, which is really the sweet spot.

I have to say that Map 5 is at another level from both Map3 and Dinan. Dinan touches Map5 for a tenth of a second on the curve when it delivers its lump of power, but otherwise its way behind. On the road, its hard to feel much difference, but on the track Map 5 pulled hard out of the corners and kept on going. Noticeably better than Map3 and Dinan.

Originally Posted by acivick

I can't help but wonder if the gap would have closed in a bit more if the same quality of fuel was used.

I was wondering this myself; I couldn't say. Maybe someone else has an idea. I used Shell V-Power 91 on Stock and Dinan and Sunoco Ultra 94 for the JB3 runs.

[GaryS]

Originally Posted by 135iCab

The only difference is that the JB3 runs were using 94 gas (to enable Map 5) whereas Stock and Dinan were using 91.

That more than explains the difference in horsepower. Thanks for trying, but it is not a valid comparison.

[135iCab]

Originally Posted by GaryS

That more than explains the difference in horsepower. Thanks for trying, but it is not a valid comparison.

94 gas is a requirement for Map 5, so the comparison there is valid as that's the only way you can (should) run Map 5.

Re: the Map 3 comparison, well, I wasn't going to do 2 separate dynos sessions to use different gas (primarily, I wanted to test Map 5). I am offering the info I have, so people can draw their your own conclusions. It's not 100% perfect, but I believe the dyno results also reflect my experience with the car.

I would be interested to see if anyone has data from using these two fuels, but I can say though that I certainly don't feel any difference when using the same setup on the different fuels.

[GaryS]

Originally Posted by 135iCab

I would be interested to see if anyone knows of any difference from using these two fuels, but I can say though that I certainly don't feel any difference when using the same setup on the different fuels.

According to the Burger tuning site, JB+ on default setting makes 313.16whp on 91 octane and 325.83 on 93.

Dinan says: "Higher octane fuel will reduce detonation, advance the timing, and lean the mixture.... We recommend using unleaded racing fuel whenever you do a track day."

If you search the e90 site, you can find comparisons using JB3.

adding: With the Dinan and stock tunes, adjustments for higher and lower octane are automatic. Map-switching tunes like JB3 or GIAC also adjust automatically. Burger says about most of their maps: "The higher the octane, the more power."

[135iCab]

Well, that would make the JB3 Map 3 and Dinan Stage 2 about the same. As I mentioned, that is pretty much what I've felt from driving the car.

I have 91 in the car right now, so I'm driving Map 3. If curiosity gets the better of me and I visit the dyno sometime soon, then I'll update the original post with the new JB3 Map 3 results.

[NewYearsBoy]

Wow... Thanks for the explanation!!! I want my car to have 350 ta 360 hp... cus stock hp for the 135i is 300... So I wanted to do Dinan intake and stage 2 tune... also exhaust.. (I want quads)...

[acivick]

Originally Posted by Stoutnj89

Wow... Thanks for the explanation!!! I want my car to have 350 ta 360 hp... cus stock hp for the 135i is 300... So I wanted to do Dinan intake and stage 2 tune... also exhaust.. (I want quads)...

Probably would be able to get that with the stage 2 tune, intake, and exhaust. And running at least 93/94 fuel of course.

[Smac355]

Originally Posted by GaryS

That more than explains the difference in horsepower. Thanks for trying, but it is not a valid comparison.

ah beat me to the point was reading to see if someone would point that out, Dinan improves w/ the higher octane fuel. I dyno'ed w/ Dinan St II & their exhaust 335 to the wheels.

[Abester135]

My 135i dyno'd 333 hp to the wheels & 379 ft-lbs on Dynojet. Dinan Stage II and BMW Performance Exhaust on basic 91-Octane (USA octane) street fuel.

[FJUNO78]

Originally Posted by 135iCab

94 gas is a requirement for Map 5, so the comparison there is valid as that's the only way you can (should) run Map 5.

Pretty sure only 93 is needed for map 5... Running 94 in dinan too would have raised their gains

[Jai2008]

Originally Posted by Abester135

My 135i dyno'd 333 hp to the wheels & 379 ft-lbs on Dynojet. Dinan Stage II and BMW Performance Exhaust on basic 91-Octane (USA octane) street fuel.

Doesn't mean crap, no comparisons.

How much is the Dinan tune in Toronto anyways?

[Irishace]

Good post and great comparison, the results align to what the consensus believes. Thanks for posting this, very solid information.

[135iCab]

Originally Posted by Jai2008

How much is the Dinan tune in Toronto anyways?

With a 20% discount and taxes in my Dinan Stg2 cost $2,316 Canadian. Fortunately, I got a full refund.

Originally Posted by FJUNO78

Pretty sure only 93 is needed for map 5... Running 94 in dinan too would have raised their gains

Yes 93... I said 94 because in Ontario we only have 91 and "Sunoco 94", which I've heard is actually 93.

[Abester135]

Originally Posted by Jai2008

Doesn't mean crap, no comparisons.
How much is the Dinan tune in Toronto anyways?

Huh? I posted my dyno run so you can compare to others. Why do you consider this to be crap?

I have no idea what a Dinan tune costs in Toronto. Why don't you ask a Dinan authorized shop in your area?

[radiantm3]

Originally Posted by Irishace

Good post and great comparison, the results align to what the consensus believes. Thanks for posting this, very solid information.

How is it solid info if he used 94 octane with the JB3 and 91 with the rest? Definitely interesting, but not really solid data considering the variables still at play.

[FJUNO78]

Originally Posted by 135iCab

I said 94 because in Ontario we only have 91 and "Sunoco 94", which I've heard is actually 93.

gotcha

[james33]

Originally Posted by Abester135

Huh? I posted my dyno run so you can compare to others. Why do you consider this to be crap?

I have no idea what a Dinan tune costs in Toronto. Why don't you ask a Dinan authorized shop in your area?

Because all dynos are different and you only have your run with the Dinan Stage 2. If you had dyno'ed on the same dyno totally stock, THEN again with the Dinan we would be able to see what gains you made. It's possible your dyno reads high and a stock run may have been 300 at the wheels. Then your 330rwhp run with the Dinan would not have been as impressive. Always get a baseline so you can see where you started from to compare each of your mods to. A run on a different dyno simply can't be accurately compared to someone else's results.