[HydroxFrost]

Originally Posted by E92William

The maf has an iat in it too. Maybe your car has a bad maf but the iat part is fine. Obviously the idea behind the mafless tune is to get rid of the bulky stock MAF and put in the tiny IAT. But it works well with the stock part too. You should flash it and see how it does.

I have 3 different MAFs, each one gives me a fault code so I just pulled it out completely and I'm running a silicon pipe straight to a cone. I'd love to find the tiny IAT just to make sure its running perfectly. Gotta be the wiring though most likely

[hassmaschine]

You need the IAT. Even if you have a MAF, the IAT is crucial. the MAF delete tune will not work at all without it.

There's a factory IAT for cars that didn't come with a MAF. It bolts up and plugs into the same connector.

[HydroxFrost]

Originally Posted by hassmaschine

You need the IAT. Even if you have a MAF, the IAT is crucial. the MAF delete tune will not work at all without it.

Appreciate the info, I'll take a look at my wiring and get an IAT working before I flash the tune.

[hassmaschine]

Originally Posted by bluewater328

Yes you can. I (among many predecessors) been on MAFless tune for quite some time.

When I first built that tune and started my car, I wasn't sure it was really working or if I had flashed the wrong file - because I had left the original MAF on, and I was expecting the car to start up rougher or something, but it was exactly the same, lol.

[rjahl]

Originally Posted by hassmaschine

I need to fix the CC on that file. Whatever car it came with, didn't have that option, and I just haven't had time to deal with it.

A while back it was discussed that this might be related to the DSC module. I'm pretty sure BMW codes a cruise control lock out when the DSC is disabled.

Terra was looking at this back in December

[bluewater328]

Originally Posted by rjahl

A while back it was discussed that this might be related to the DSC module. I'm pretty sure BMW codes a cruise control lock out when the DSC is disabled.

Terra was looking at this back in December

For the record, my cruise control works with the MAFless tune. 2011 E90 328i. Maybe just the older MSV70?

[hassmaschine]

Originally Posted by rjahl

A while back it was discussed that this might be related to the DSC module. I'm pretty sure BMW codes a cruise control lock out when the DSC is disabled.

Terra was looking at this back in December

Could be but I don't think the DSC disabled on these? I have never seen or heard that anyway. It's not disabled on the DME, or at least I didn't modify any of this stuff.

Originally Posted by bluewater328

For the record, my cruise control works with the MAFless tune. 2011 E90 328i. Maybe just the older MSV70?

no, the MSV70 tune is built differently. The MSV80 version is basically modified from one that already came from the factory without a MAF. The MSV70 version is based on the factory 330i software, with the no-MAF parameters spliced in (and cruise control fully functions). So there's some sort of parameter difference which is causing the CC to not work on some cars.

The issue with MSV80 is I don't have good enough definitions to know for sure what the exact differences are on MSV80 with and without a MAF, or I'd just do the same thing.

[desertman123]

Originally Posted by rjahl

A while back it was discussed that this might be related to the DSC module. I'm pretty sure BMW codes a cruise control lock out when the DSC is disabled.

Terra was looking at this back in December

pls

128i here with the MAFless+headers tune and IAT. Cruise doesn't work and I randomly get DSC 5E18 (DME CAN error, shadow code). DSC isn't disabled, traction and ABS definitely still work but clearly the DSC unit isn't happy with something the DME is sending it. But I don't know the first thing about this.

Car runs awesome otherwise with headers and MILVS. I wanna get it dyno'd whenever my friend has another dyno day.

[hassmaschine]

Could be a CAN setting/parameter. That's a good thought.

[bluewater328]

Originally Posted by hassmaschine

Could be but I don't think the DSC disabled on these? I have never seen or heard that anyway. It's not disabled on the DME, or at least I didn't modify any of this stuff.



no, the MSV70 tune is built differently. The MSV80 version is basically modified from one that already came from the factory without a MAF. The MSV70 version is based on the factory 330i software, with the no-MAF parameters spliced in (and cruise control fully functions). So there's some sort of parameter difference which is causing the CC to not work on some cars.

The issue with MSV80 is I don't have good enough definitions to know for sure what the exact differences are on MSV80 with and without a MAF, or I'd just do the same thing.

Originally Posted by desertman123

pls

128i here with the MAFless+headers tune and IAT. Cruise doesn't work and I randomly get DSC 5E18 (DME CAN error, shadow code). DSC isn't disabled, traction and ABS definitely still work but clearly the DSC unit isn't happy with something the DME is sending it. But I don't know the first thing about this.

Car runs awesome otherwise with headers and MILVS. I wanna get it dyno'd whenever my friend has another dyno day.

This is getting interesting. {subscribed}

Now I gotta go check my tune....

[Leucosticte]

So I flashed 330i tune for both the engine and the transmission, right now the transmission feels like it is learning adaptions so I cant really say anything about it but throttle response definitely feels better with the 330i tune even without 3 stage manifold. I will drive the car again tomorrow and see if I can find any more differences.

[E92William]

What I noticed regarding the transmission is that since you make more power down low, the transmission doesn't get tuned just the engine. Basically it will shift quicker and to a lower gear faster than normal. Because you don't need to use as much throttle to get going, this will bog it down a bit as it throws it to a lower rpm faster. A 6l45 tune would be great but I'm not yet knowledgeable enough to mess with mine, or try to fix the cruise control issue.

[HydroxFrost]

Originally Posted by E92William

What I noticed regarding the transmission is that since you make more power down low, the transmission doesn't get tuned just the engine. Basically it will shift quicker and to a lower gear faster than normal. Because you don't need to use as much throttle to get going, this will bog it down a bit as it throws it to a lower rpm faster. A 6l45 tune would be great but I'm not yet knowledgeable enough to mess with mine, or try to fix the cruise control issue.

I feel like the xhp stage 3 would be a good pair for the 330 3 stage tune, but it is a little expensive.

[Leucosticte]

Originally Posted by E92William

What I noticed regarding the transmission is that since you make more power down low, the transmission doesn't get tuned just the engine. Basically it will shift quicker and to a lower gear faster than normal. Because you don't need to use as much throttle to get going, this will bog it down a bit as it throws it to a lower rpm faster. A 6l45 tune would be great but I'm not yet knowledgeable enough to mess with mine, or try to fix the cruise control issue.

I believe bimmerlabs was talking about a 6l45 tune.... I wonder where that's went, probably isnt going to happen tbh. Also, the transmission tune that I flashed was from the European 330i with the 6l45, I have a couple friends who have flashed it and they have reported improvements in shifting speed.

[hassmaschine]

at this point, the stock 330i file for the GM trans is probably going to be your only choice, unless somebody comes up with the RSA keys.

we can modify the ZF though, it's been supported for ages. Doesn't even require an RSA delete because we have the keys.

[E92William]

Well to begin with I wasn't aware that the euro 330i had the gm transmission aswell. I thought they had the zf box. Where could I get my hands on those tune files? It would be great if the 330i with the gm box happens to be an n53 because then the transmission tune will ideally be setup for the 272 or so hp the n53 makes.

Theoretically I think one could mount a 6hp to an N52 from a 28i car but I think that's way more trouble than it's worth, at that point just get a manual.

[JingChai]

So I have the AA tune on a N51 with 6MT, is the 330i Tune comparable or better than the AA tune?

[rjahl]

Originally Posted by JingChai

So I have the AA tune on a N51 with 6MT, is the 330i Tune comparable or better than the AA tune?

You should probably mention when you purchased the AA tune. The early versions where not that impressive.

[JingChai]

I got my tune last year in 2019, is that considered the later version?

From what I understand, since I already have the 3 Stage Manifold on the N51, I can run the 330i tune and get the power and torque output of a 330i? Or am I limited because I have a N51?

Originally Posted by rjahl

You should probably mention when you purchased the AA tune. The early versions where not that impressive.

[hassmaschine]

Probably not a big difference in that case. I am not sure what AA changed on the N51 - I have never seen it. Hopefully more than they did on the N52.

There's not an N51 "330i" file online though. A few people have asked, but I haven't had much motivation to make it.

[JingChai]

Thanks Hass, right now with the AA tune there is more pull through the entire rpm range.

Yeah, I can understand the N51 isn't as popular as the N52. Is the N52 "330i" file comparable with a N51?

Originally Posted by hassmaschine

Probably not a big difference in that case. I am not sure what AA changed on the N51 - I have never seen it. Hopefully more than they did on the N52.

There's not an N51 "330i" file online though. A few people have asked, but I haven't had much motivation to make it.

[hassmaschine]

it could all be copied over yes. The main difference is the emissions equipment and lowered compression.