17-18lbs of boost stock

[Shelby Miles]

Using BimmerLink I’m seeing 17-18lbs of peak boost. I understood stock peak to be around 14. Did I miss something? I bought the car used with 2700 miles on it.
No issues whatsoever. Runs very strong.

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[suicidaleggroll]

Sounds like your car might be tuned

 

[razorlab]

Using BimmerLink I’m seeing 17-18lbs of peak boost. I understood stock peak to be around 14. Did I miss something? I bought the car used with 2700 miles on it.
No issues whatsoever. Runs very strong.

Ecu is load/torque based so boost will be different in different weather conditions.

Example, on a cold day, 500nm might need 14psi to produce. On a warm day, it might need 17psi.

I've seen 16-17psi on my 100% stock un-tuned 2020.

 

[Shelby Miles]

It’s warm today, 82 and sunny. Intake temps were around 110.

 

[Timmy_Jones]

Sounds like your car might be tuned

Or it’s stock, even monitored yours? Seen the change in pressure with ambient temps?

 

[Thraxbert]

Sounds tuned to me.

 

[FuzzyRev]

I've certainly seen "peak" boost there before, but it usually tapers off a bit as you get into the upper rev range.

EDIT: And yeah, the ambient air is less dense at higher temperatures, so it will vary a bit as the computer tries to find the sweet spot for the conditions presented.

 

[razorlab]

It’s warm today, 82 and sunny. Intake temps were around 110.

Yea that does sound like it might be tuned. Do you have a log by chance?

 

[razorlab]

I don’t think it’s tuned. Not sure who would tune a car for that low of a boost upgrade.

The OTS maps are around that. Just doesn't taper like stock.

 

[Shelby Miles]

Yea that does sound like it might be tuned. Do you have a log by chance?

I don’t. Can I capture them with BimmerCode or BimmerLink?

 

[razorlab]

I don’t. Can I capture them with BimmerCode or BimmerLink?

Yes you can log boost with Bimmerlink.

 

[Shelby Miles]

Yes you can log boost with Bimmerlink.

thank you. I will look it up and get some logs posted in the next couple days.

I test drove a 2021 before I drove this one. This 2020 felt noticeably faster with instant low end grunt and pulled consistently harder to 6500.
I picked the 2020 to tune it. Hypothetically, if it’s currently tuned, how does that affect my future tuning plans?

 

[zrk]

Probably chargepipe boost, I'm surprised it's not higher, honestly. Does is stay that high or does it bounce around?

 

[Shelby Miles]

Probably chargepipe boost, I'm surprised it's not higher, honestly. Does is stay that high or does it bounce around?

It doesn’t bounce, I’ve seen that in my Subaru’s. I do have an FTP charge pipe and intake pipe with an HKS drop in filter.

 

[razorlab]

thank you. I will look it up and get some logs posted in the next couple days.

I test drove a 2021 before I drove this one. This 2020 felt noticeably faster with instant low end grunt and pulled consistently harder to 6500.
I picked the 2020 to tune it. Hypothetically, if it’s currently tuned, how does that affect my future tuning plans?

If your 2020 pulls harder up top than 21+, I bet it's tuned. 21+ has like 40whp extra over the 2020 after 5k, stock for stock.

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