[iAerodynamic]

thanks a lot second325 lol now we have a base dyno now awaits the new 330 !

[e90pilot]

Originally Posted by Second325

Funny I just did a baseline with my steptronic this morning. The tech could only get pulls from 5,000 to 7,000 rpm because the tranny would drop down a gear. We were getting pretty consistent results though. Most pulls came out with max hp at 181 and torque around 161. What I've seen from others the max torque should be between 3,000 to 4,000 so mine should probably be higher. The reason for the dyno was that I got my hands on an intake. I'm just waiting for a few more parts to show up at my door. Once I get them I'll put on the intake and do another dyno trip. FYI the 325 DME already has the programming to open the adjusters. I did a quick test yesterday. Now I'm dying to know if we can get an increase just from the intake??? Either way here is an average pull and then my best for a base line on a totally stock 325i step:

A 325i should have a little more power with the new manifold because of the increased airflow. The DME won't be able to take advantage of increased airflow. The mixture settings will anticipate a lower airflow but once car gets a sudden rush of air it will add fuel.

It's just the opposite of my case. My DME anticipates a large rush of air but never really get it. That's why there's a large hesitation at low rpm whenever you floor the go pedal. I'm just worried that my car is running too rich and dumping raw fuel through the cats.

[jabwind51]

Marcelo: Good luck man! (fingers crossed)

Well, I will 100% do this on my new 128i--if it works. Anyone else with 128i/328i's thinking about it? - Grayson

[e90pilot]

Originally Posted by Metal Muirhead

id do it on my 328, but i think we need an x3SI manifold instead of a 330 manifold

Correct me if im wrong

Apparently the part numbers are the same.

Originally Posted by mike-y

I'd cross-reference the part numbers. There's a pretty good chance that the manifold is still the same, or almost the same. The 328 still uses the same cylinder head, which would mean the intake ports should have the same bolt pattern. Check the intake manifold gasket part numbers too. Even if the IM is slightly different, it could still fit.


EDIT: I just checked for you guys. The part numbers are the same, the E90 330i, X3 3.0si, and the Z4 3.0si all have the same intake manifold. So that should open up a lot more options for people trying to track one down.

[e90pilot]

Yay! A slot at the shop opened up. My car's going in tomorrow. Not sure how it will take because it's a side job so my car gets worked on last and I have some other items to take care of as well. Afterwords I'll see if I can put it on a dyno. Anyone know how close the manuals are to the steptronics on power? I'm sure it's close, the new ZF autos are pretty efficient.

[iAerodynamic]

Originally Posted by e90pilot

Yay! A slot at the shop opened up. My car's going in tomorrow. Not sure how it will take because it's a side job so my car gets worked on last and I have some other items to take care of as well. Afterwords I'll see if I can put it on a dyno. Anyone know how close the manuals are to the steptronics on power? I'm sure it's close, the new ZF autos are pretty efficient.

[Second325]

Originally Posted by e90pilot

Yay! A slot at the shop opened up. My car's going in tomorrow. Not sure how it will take because it's a side job so my car gets worked on last and I have some other items to take care of as well. Afterwords I'll see if I can put it on a dyno. Anyone know how close the manuals are to the steptronics on power? I'm sure it's close, the new ZF autos are pretty efficient.

Excellent, I can't wait to see your results. I would be highly surprised if you don't get 20 hp out of this.

Take a look at this post for some dyno results including a 325i 6M:
http://www.e90post.com/forums/showpo...84&postcount=3

I was going to wait to post but screw it. I installed my intake over the weekend and am planning on taking my car back to the dyno this Friday. I have to say during my first test drive the car reacted poorly. Shifts were screwy and the low end torque was gone. Now after a few days shifts are back and the off the line response has returned. The DME must have adjusted to the increased air flow. The big difference I notice from the swap though is when the car gets above 3200 rpm. When I stomp on it there seems to be more torque at the higher rpms. I'm assuming that is when the adjusters are opening. When I tested them a week ago the mid range opened around 3,500 rpm. Then the high range opened only under heavy throttle and above 3,800 rpm. I'll post the results this weekend.

Marcello I would definitely give your DME time to adjust before you dyno.

[Second325]

I was able to dyno my car early this evening with just the 330 manifold and everything else stock. It looks like I'm getting about 8 hp at the wheels. Since my original baseline was using limited rpm range of 5k to 7k I can really only compare max hp. First pic is all three pulls using STD numbers. Then the next is the best pull for those who may want to see SAE. I couldn't believe the hp drop around 4,200 rpm then spike back up when the high end adjuster opens up. You can see that same type of dip on the 330 dyno sheets but definitely not as severe.

At this point I'm really curious to see what Marcelo will get with the ECU flash and manifold swap?

[e90pilot]

Well photo buckect is not accessing me album so I can't post any pictures. I got my car back last night and everything appears to work ok but I still need to reset the ecu. I still get some strange throttle quirks that should go away once I disconnect the battery (which is more complicated than I thought). The is noticably quicker and pulls hard to redline and has way more torque in high gears. The party really starts at 4 grand. The sound is different too but very subtly so. The other thing is now my car is giving me an SES light for open gas cap ocasionally. Not sure if it's relates tonthe intake or not, but I'll check it out.

Need to get the car to the dyno. Anyone know a place open on Saturday in the bay area?

[bmwv]

you can try these guys they must be close to you

http://www.performanceoptions.net/index.html

[e90pilot]

Uh oh... SES light is on. For the gas cap? :

[bmwv]

that definitely sucks. may be you can take it to the dealership and let them c can they find what is the problem

[jabwind51]

Marcelo, any updates on this project??

[atlau]

The new 2010 528i is supposed to be rated at 258 hp. Wonder what difference there will be between the 328 and 528 engines.

[mercury26]

Originally Posted by atlau

The new 2010 528i is supposed to be rated at 258 hp. Wonder what difference there will be between the 328 and 528 engines.

BMW Blog (take it for what it is) says the 2010 528i will only be rated 240HP, so just a 10HP bump from the current 328i engine.

http://www.bmwblog.com/2009/11/24/20...y-the-numbers/

[e90pilot]

Originally Posted by jabwind51

Marcelo, any updates on this project??

Everything is installed but I have an SES light for an apparently inrelated reason. The fuel tank is not sealing so I'm getting a tank vent fault. It has no bearing on power but I'm having issues with the ECU programming. I think an ECU reset will solve it but I can't disconnect the positive terminal of the battery because it is obstructed some module. Once I have all these thing figured out I'll get it on the dyno. This week is gonna be hectic but with Thanksgiving and all but I should be able to get it done next week.

The butt dyno tells me it definitly faster but not quite 275hp fast. I think the engine mapping is a little off. Once I have it reset it should work properly.

[jabwind51]

Sounds good man. Have a good holiday then!

[e90pilot]

Update! Got the SES light fixed. The vent hose that attatches to the intake also connects to the fuel venting system. That hose was loose and was allowing the fuel tank to depressurize. It's fixed now.

I also took my car to BR Racing in Los Gatos to fix the throttle issue. Looks like it's not as easy as just loading new software and slapping on a new intake. I'm getting a full custom tune in the comming weeks which inculdes dyno runs. That software will probably be available for all of you with 325i's.

[iAerodynamic]

Originally Posted by e90pilot

Update! Got the SES light fixed. The vent hose that attatches to the intake also connects to the fuel venting system. That hose was loose and was allowing the fuel tank to depressurize. It's fixed now.

I also took my car to BR Racing in Los Gatos to fix the throttle issue. Looks like it's not as easy as just loading new software. I'm getting a full custom tune in the comming weeks witch inculde dyno runs. That software will probably be available for all of you with 325i's.

car feels faster?

dangg.

[e90pilot]

Originally Posted by iAerodynamic

car feels faster?

dangg.

The car "feels" faster, but we all know how that can go. I do have some more imperical data. The DSC light will flash in places that it never did and the gas mileage has gone up to almost 26mpg avrage despite my testing out the new equipment. It used to be 23.7mpg.

[Drillslinger]

Bump for update??

[e90pilot]

Don't worry this is far from dead LOL. I'm waiting for a response from Powerchip. They're currently in SoCal but they have a couple of customers in the bay area that also need tuning. So, whenever they get that schedulesd I'll be heading to BR Racing in Los Gatos.