[doughboy]

Just come back from CPR after some dyno runs.

Impressive figures!

See below. lowest is Map 0, next map 4, highest map 6.

First graph is FLYWHEEL BHP, second is WHEEL BHP.

On map 6 the IAT was getting high on WOT runs, I usually run map 4 now with the DCI and Forge units.

V smooth & fooking fast. They were very impressed, the readings were higher and smoother than runs using various other maps etc that they have recorded on the dyno.

It was the highest reading 335i they've ever had in fact! 450lbft on map 6 with 423bhp!!

[zltm089]

standard bmw claim 306bhp and now ur getting 423bhp with JB3 plug n play MAP5 - AR Design OCC - Forge Diverters - BMS Dual Cone Intake ?....VERY IMPRESSIVE!!!...

[doughboy]

The 423 figure is on map 6 which is too much IMO without an intercooler etc.

It was 401 hp on map 4 (same as 5) Standard reads 339hp which is odd, but the increase to 401 is 62, so about right.

Even if their flywheel figures are a bit ott, the wheel figures are about right.

It seems most 335i run about 320+ hp standard on decent fuel anyway

[Yahoo]

Good figures DB and nice power delivery - good work!

[M3-FAST]

Seriously good figures there Mike - see you made it over to CPR in the end

Decent bunch of lads aren't they

[doughboy]

Originally Posted by Yahoo

Good figures DB and nice power delivery - good work!

Cheers! below are some more interesting graphs - supporting your points about care when overdoing it with a JB3!

Originally Posted by M3-FAST

Seriously good figures there Mike - see you made it over to CPR in the end

Decent bunch of lads aren't they

Thanks Paul, after you mentioned them, I called them on spec and Max said they coud get me in the following morning.

They were very interested in the JB3 and offered me a full tuner session with the head dyno / mapper engineer for the price of a £60 power run so we could try the car in various modes and settings. We did about 10 or 15 runs all in over at least a couple of hours. I think Max has his eye on the JB3 as a possible product for them to sell - he was well impressed with it to and has offered me free dyno runs when I get the DPs and Intercooler fitted, again so they can trial the JB3.

Some serious motors in there - Max was very proud of their Time Attack winning Evo 5 - 970BHP FFS! It holds the outright all time lap record at Snetterton too.

They had another Evo 8 out back - 1094BHP!!

[Alpina_B3_Lux]

Looks good!

I still remember how it felt on map 5 when I was running the JB3, it was pulling really strong. Must be fun to drive!

You gotta come to the 'Ring next year with that ride.

Alpina_B3_Lux

[A335i]

Those are very impressive figures, you must take great care of your car.

Just out of interest because I know you did these 2 mods together with the DCI and DV. When these got fitted and sorted correctly, for instance, you were mentioning changing the springs on the DV, did the car feel faster or pull harder i.e did you recognise an instant performance gain?.

[doughboy]

More graphs:

BTW, the real boost (logged on the JB3) was about 14psi peak (1 bar) on map 6 and about 12.5psi on map 4.

1. Against IAT, you can see how much the intake temp rises with the higher maps, even though map 6 (red) starts lowest, it soars past the others to 50degC in a single run. The green OE boost is very happy temp wise. The dyno engineer said this was way too much for the standard intercooler and advised against using it on the road for any thing other than short overtaking blasts.

2. Against Ignition advance. There are somw pretty sharp retards, especially on Map6 (red) where is pulls it several times in succession. The green standard adv is very smooth

3. Against fuel trim. This is a concern, on Map6 the fuel trim (i.e. the ECU trying to meet the required AFR) tops out on the red curve, this means the car could not supply the required fuel at that point, this may have triggered a fault code, i'll have to check it. The green trim is standard - i.e. perfect. On Map 4 the ECU was able to trim correctly. I'll be sending this to Terry at BMS for comments.

4. Against AFR. Self explanatory.

[M3-FAST]

Originally Posted by doughboy

Thanks Paul, after you mentioned them, I called them on spec and Max said they coud get me in the following morning.

They were very interested in the JB3 and offered me a full tuner session with the head dyno / mapper engineer for the price of a £60 power run so we could try the car in various modes and settings. We did about 10 or 15 runs all in over at least a couple of hours. I think Max has his eye on the JB3 as a possible product for them to sell - he was well impressed with it to and has offered me free dyno runs when I get the DPs and Intercooler fitted, again so they can trial the JB3.

Some serious motors in there - Max was very proud of their Time Attack winning Evo 5 - 970BHP FFS! It holds the outright all time lap record at Snetterton too.

They had another Evo 8 out back - 1094BHP!!

The Orange time attack car is awesome, won plenty of races also I believe. The Evo 8 out the back....is that the white one covered with a sheet, spaceframe chassis and HUGE slick tyres on the back?

Sounds like you got a bargain £60's worth there - I must admit, mine spent a good hour or so on there, the main problem was the heat - it was a blistering hot day, and that small (ish) dyno area was just getting hotter and hotter, even with the huge fans going.

Did you get the geometry set up also, or have you already sorted that now?

I was amazed at the amount of GTR's they had in pieces whilst mine was in, I think I counted three on the ramps having gearboxes fixed.

[doughboy]

Yep, the white one with the straight through 5 inch exhaust exiting through the wing infront of the front wheel!! The UKs most powerful Evo!

It was freezing in there yesterday, about 5degC ambient - we were glad of some hot air from the engine bay to keep us warm!! The cell ventilation and blowers made the 'wind chill' even worse! Gloves and hat required with the ear defenders.

I'm sure that helped with the figures!!

It was full of GTRs, 2 with engines out, one in for a 750bhp upgrade and another with a fractured block!

[zltm089]

Mike, do you think that they would know how to fit a JB3?

Are they knowleable about E90s? or is it just Jap cars?

[doughboy]

They are mainly jap but now into Mercs and BMW too. I only went as they were local to me and I certainly wouldn't travel from London!

They've never seen the JB3 - which is why they were keen to look into mine.


If you could change a head unit / speakers etc in a car for example, then you could fit a JB3 easily. The hardest bit is getting to and removing the lid on the ECU compartment for the first time!

Get a mate who's more handy to help if need be, but you'd be better off doing it yourself then you'd know how to take it off if you need to.

[Ant Man]

Had a little look at the curves on Friday but only had a proper look today and they're very impressive. Not the usual peaks and troughs on boosted motors. Also nice to see the correct correlation (where power and torque cross) for a change.

Good time of year to do a power run. Out of interest Mike, would you see much of a power drop when the outside temp is 25C?

[doughboy]

Originally Posted by Ant Man

Had a little look at the curves on Friday but only had a proper look today and they're very impressive. Not the usual peaks and troughs on boosted motors. Also nice to see the correct correlation (where power and torque cross) for a change.

Good time of year to do a power run. Out of interest Mike, would you see much of a power drop when the outside temp is 25C?

Thanks!

The ECU reduces boost when the intake temp is low to account for the more dense air. So in theory it shouldn't make too much difference up to about 30degC intake temp, but i'm sure its quicker with cold air, it certainly feels it on the road.

Although it was freezing cold, the engine bay heat seemed to give an intake temp of around 20degC at the filter intake, and then we waited for the intercooler to cool after each run so the intake manifold temp was also around 20degC, which meant the intake system temp was stable before each run.