Start up Rpm
Ill be honest, I don't know what a e38 comes in. If you tell me what the base tune/ecm came out of, I can probably download the tune from HP Tuners and take a look. It only does it when it's warm? Does it idle down after say 4-5 seconds?
TECH Fanatic
Joined: Oct 2014
Posts: 1,220
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From: Virginia
I highly doubt it’s a tune setting. Literally nothing is set that high stock. Changing the tune for something like this is more of a bandaid for a mechanical issue.
I’d look at vacuum leaks, or bad throttle settings. What TB are you using? Is it compatible with your other parts?
It’s highly unlikely this is a tune issue.
I’d look at vacuum leaks, or bad throttle settings. What TB are you using? Is it compatible with your other parts?
It’s highly unlikely this is a tune issue.
I highly doubt it’s a tune setting. Literally nothing is set that high stock. Changing the tune for something like this is more of a bandaid for a mechanical issue.
I’d look at vacuum leaks, or bad throttle settings. What TB are you using? Is it compatible with your other parts?
It’s highly unlikely this is a tune issue.
I’d look at vacuum leaks, or bad throttle settings. What TB are you using? Is it compatible with your other parts?
It’s highly unlikely this is a tune issue.
Thread Starter
TECH Resident
Joined: Sep 2019
Posts: 819
Likes: 261
From: Melbourne, Australia
I highly doubt it’s a tune setting. Literally nothing is set that high stock. Changing the tune for something like this is more of a bandaid for a mechanical issue.
I’d look at vacuum leaks, or bad throttle settings. What TB are you using? Is it compatible with your other parts?
It’s highly unlikely this is a tune issue.
I’d look at vacuum leaks, or bad throttle settings. What TB are you using? Is it compatible with your other parts?
It’s highly unlikely this is a tune issue.
I put new springs , lifters and the same spec cam in , didn’t touch the tune
the revs drop straight back down.
When it’s a cold start alls normal.
ive checked for vacuum leaks
the tune is good except the hot start rpm
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TECH Resident
Joined: Sep 2019
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From: Melbourne, Australia
TECH Fanatic
Joined: Oct 2014
Posts: 1,220
Likes: 179
From: Virginia
Thread Starter
TECH Resident
Joined: Sep 2019
Posts: 819
Likes: 261
From: Melbourne, Australia
Got this issue sorted now. I hadnt tuned E85 before so i got my tuner do it, for some reason he had the ETC scaler set at 4,000.
I upped it to 7,200, dropped startup airflow by 10% over 68degrees celsius and now its close
I upped it to 7,200, dropped startup airflow by 10% over 68degrees celsius and now its close