[BMW F22]

seriously I had a headache after reading that. Sounds great though!! thx for the info.

[MWcoupe]

wow GSI ur the man, thanks for the answers.
you made my night man....hahahah

[ksfrogman]

Originally Posted by GSI

Attachment 37906


... i will answer as many Questions as i can,


Jon
Dynocomp.

GSI,

There has been a lot of hooplah about the 325i being a "detuned 330i," and despite the difference in intake manifold design (single vs three-stage) between these two E90s, the HP/Torque figures on the dyno'd 325i steptronic actually look almost identical to the 330i 6MT's numbers. This might suggest that the 6MT 325i might see an even bigger improvement in wHP (due to reduced drivetrain loss).

The E90's ability to electronically attenuate the valvetronic function could explain how a reflash could actually give such huge gains. If indeed the 325i is electronically detuned to some extent, those of us with the 330i wonder if the % improvement in torque/HP would be similar to that with the 325i or is this "tuning" already maxed out on the 330i?

Any idea what the improvement would be for the 330i?

[diesel007]

Damn I can't wait for this mod! I want to get this done ASAP!

[MWcoupe]

im crossing my fingers that the flash for 330 will have more hp/torque gain.
and hope that the 93octane gas really make a difference. =)

[ChineseGuy]

i dont' get how this works, i guess i'm just a noob about ECU

but is there anyway for me to participate in this if i'm in Canada....haha

i just saw the price and the hp gain....and now i want it too....just don't know how this works...haha....

[LOLrance]

I know a lot of chips for VW, Audi, etc are said to be "undetectable" by dealers. And im sure if you take your car in for a small problem, i doubt they would check for a new program. But if more serious engine problems start to occur, they'll probably download the program from your car and see that it dosent match the stock one and refuse to fix it. From what i've read above, you guys can have the stock flash reloaded, but is it possible that it will match 100%. So if you get the flash, something happens to your car that you need dealership to fix, you get the stock flash reloaded, it will match the stock code 100% and dealer would never be the wiser?

[XxLancaxX]

Im in for sure for 330xi. One quick question. How did you do the dyno since its the 'x'? Does holding the DSC and disabling everything make it RWD so you can dyno with out messing up the driveshaft or did you still have to disconnect it?

[uhaulball]

yea i was wondering myself...


How do u dyno AWD??

[epiphone3]

Originally Posted by BiggieJ

dont believe everything you read. automobile shows some nice dyno numbers but it was using the Dynojet which tends to get optimistic numbers and it was a preproduction model. well just have to wait and see for real life dynos from members...but i do believe BMW is underratting the numbers a lil bit not to hurt sales for their upcoming M3

Ummmm... they dyno'd the 330i at the same dynojet dyno. Therefore for the 335i run, it would read as high or as low as the 330i run... give or take the few horsepower difference that you would see by dynoing on a different day.

BMW is definately underrating the 335i and that chip for 1295 that supposedly moves you to 360 horsepower is a friggen money grab if I have ever seen one. The car already makes that kind of juice at the engine.

[Goalie_K]

Originally Posted by epiphone3

That's hilarious. The 335i is already at 350-360 hp out of the box. BMW just underrated it at 300 hp for marketing purposes. Automobile Magazine Dyno'd a 335i and showed 275hp and 300 ft-lbs at the rear wheels. If you take a manual 330i dyno chart and apply the same losses from engine to rear wheel, this means 335i is putting out more like 350 horsepower at the engine.

Pay 1295 to get nothing... in the case of the 335i. I am curious about independant 325i results though.

Magazines have been know to get "hot" cars for testing....that is no secret. Let's see what they are really putting out when people start dynoing them.

BTW, 275hp to the wheels is no way near 350-360hp on a Dyno Jet. Closer to 315-320hp.

The most exiciting thing is with valvetronic and turbos tuners should have a field day with these motors.

[Got-BMW?]

Originally Posted by uhaulball

yea i was wondering myself...


How do u dyno AWD??

It's an AWD dyno guys....

[Got-BMW?]

Originally Posted by alpine330

im crossing my fingers that the flash for 330 will have more hp/torque gain.
and hope that the 93octane gas really make a difference. =)

I hate to be the one to say it but I don't see a 15RWHP bump going from 91 to 93 octane on the 325/330. Maybe on a forced induction car like a 335 but not a N/A car, IMO.

I just can't believe that BMW de-tunes the cars this much that people are seeing a 40rwhp bump in a tune. That's HUGE in the car world and not many cars have nearly that kind of an increase over a tune. Not to mention the ones I do know of are all FI like the 07 Cobra.

[poldim]

How smooth does the car run with it?

[epiphone3]

Originally Posted by Goalie_K

Magazines have been know to get "hot" cars for testing....that is no secret. Let's see what they are really putting out when people start dynoing them.

BTW, 275hp to the wheels is no way near 350-360hp on a Dyno Jet. Closer to 315-320hp.

The most exiciting thing is with valvetronic and turbos tuners should have a field day with these motors.

actually, it doesn't matter the brand of dyno really... what matters here is that they used the same dyno for both tests so it is a relatively controlled variable.

Automobile compared claimed horsepower on the 330i to measured rear wheel horsepower on the 330i vs. claimed horsepower on 335i to measure rear wheel power. They then applied the losses seen on the 330i from claimed engine to rearwheel power to the 335i and came up with roughly 350 hp.

[Goalie_K]

Originally Posted by uhaulball

yea i was wondering myself...


How do u dyno AWD??

On a AWD dyno is best! Like they one they used for this 325. Look at the picture from early on. Thay dyno has front and rear rollers. On an Audi you can disable the Haldex and run in 2wd. With a Porsche, you must drop the front driveshaft to run on a 2wd dyno. I do not think either is a possiblity with the BMW AWD system and I am pretty sure since the front and rear speed sensors will read difernently the car will not run correctly on anything but a awd dyno.

[Goalie_K]

Originally Posted by epiphone3

actually, it doesn't matter the brand of dyno really... what matters here is that they used the same dyno for both tests so it is a relatively controlled variable.

Automobile compared claimed horsepower on the 330i to measured rear wheel horsepower on the 330i vs. claimed horsepower on 335i to measure rear wheel power. They then applied the losses seen on the 330i from claimed engine to rearwheel power to the 335i and came up with roughly 350 hp.

You are right, however a load bearing dyno, like a dyno-dynamics will read FI cars differently than a non load bearing dyno jet. By appliying a load to the rollers, the turbos will spool up quicker which usually results in a slightly higer torque #......however they results of the 335i are awesome any way we look at it! I would have loved to see how many psi it was making. That could be an indication that the car was a ringer. I remember Car and Driver tested a SL600 which ran 0-60 in like 3.6 seconds. http://www.caranddriver.com/shortroa...enz-sl600.html
that car certainly was a ringer. It is easy to do with turbocharged cars.

That all being said I have never heard of a BMW with an over 25% drivetrain loss on a dyno jet. It is possible that the 330i was not making the power it should have and the 335i was making more. What matters most is the delta before and after making a change regardless of what dyno is used as long as you use the same type (before and after).

[whippersnapper]

Originally Posted by Goalie_K

On a AWD dyno is best! Like they one they used for this 325. Look at the picture from early on. Thay dyno has front and rear rollers. On an Audi you can disable the Haldex and run in 2wd. With a Porsche, you must drop the front driveshaft to run on a 2wd dyno. I do not think either is a possiblity with the BMW AWD system and I am pretty sure since the front and rear speed sensors will read difernently the car will not run correctly on anything but a awd dyno.

Only the TT and the A3 have the haldex, the A4,A6 & A8 have the mechanical torsen center differential

[Joe Bimmer]

Originally Posted by diesel007

Damn I can't wait for this mod! I want to get this done ASAP!

+1. How can I get this in Austin??? And how soon? I can't wait to put our 93 Octane to good use...

[ksfrogman]

The popularity (present and future) of this thread is testament to the fact that there is a huge void in performance related mods for the E90, which few aftermarket manufacturers seem in a hurry to fill and capitalize on.

[MWcoupe]

one question for the X-drive owners. what does DSC disable do?
does that mean it will have wheel spin when i redline from neutral to drive?

[whippersnapper]

Originally Posted by alpine330

one question for the X-drive owners. what does DSC disable do?
does that mean it will have wheel spin when i redline from neutral to drive?

You obviously aren't a graduate of the school of mechanical sympathy