MAF and MAP Question
Thread Starter
Racer
Joined: Feb 2008
Posts: 427
Likes: 32
From: North Alabama
St. Jude Donor '24-'26
MAF and MAP Question
Has anyone had any problems overdriving the MAF and MAP sensors? If so, what did you do about it? I've got an 09 Z06 Twin Turbo car I'm trying to fine tune.
Thanks in advance guys!
Thanks in advance guys!
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
Thread Starter
Racer
Joined: Feb 2008
Posts: 427
Likes: 32
From: North Alabama
St. Jude Donor '24-'26
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
DSTECK does lots of tuning and has very in-depth knowledge, so hopefully he will have an answer for you.
BJK
Last edited by 07MontRedcp; Dec 1, 2011 at 01:25 PM.
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Thread Starter
Racer
Joined: Feb 2008
Posts: 427
Likes: 32
From: North Alabama
St. Jude Donor '24-'26
We're using HPTuner and it didn't play well with the 2 bar MAP, so thats why I'm here looking for alternatives.
DSteck, I appreciate your input and will get you details this evening when I get back to the car.
DSteck, I appreciate your input and will get you details this evening when I get back to the car.
Burning Brakes
Joined: Aug 2002
Posts: 971
Likes: 2
From: upstate sc
Should just have to load the custom OS and fill in the new VE table. Most tunes that still run a MAF will run a 100% maf tune, it will make your life easier. If I was going to all the trouble to 100% dial in a VE table I would be tempted to run SD to clean up the intake tubing by running MAFless. I do prefer to run MAFs as to me they are much easier to tune, the VE table is simply to large to get good data on every load/rpm axis.
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
Should just have to load the custom OS and fill in the new VE table. Most tunes that still run a MAF will run a 100% maf tune, it will make your life easier. If I was going to all the trouble to 100% dial in a VE table I would be tempted to run SD to clean up the intake tubing by running MAFless. I do prefer to run MAFs as to me they are much easier to tune, the VE table is simply to large to get good data on every load/rpm axis.
BJK
Burning Brakes
Joined: Aug 2002
Posts: 971
Likes: 2
From: upstate sc
I think DSTECK is presently running a maf only tune. My car was originally tuned in '07 and uses the stock maf which is pegged out in boost and runs off the pe table. I'm installing a bigger maf and going with the HPT custom os. I think I will run maf only until I can get it to a load bearing dyno, that seems to be about the only way to fill most of the ve cells accurately.
BJK
BJK
A MAF only tune is fine but he will still need to convert to a 2 bar custom OS to get the higher MAF tables, even if he keeps it MAF only. An 07 has a max of 12K where the 2bar OS has 15K limit along with double the grams/sec airflow limit.
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
BJK
Burning Brakes
Joined: Aug 2002
Posts: 971
Likes: 2
From: upstate sc
You're exactly right. Makes me wonder even more why he is having trouble.
Thread Starter
Racer
Joined: Feb 2008
Posts: 427
Likes: 32
From: North Alabama
St. Jude Donor '24-'26
Thanks guys for all the attention.
From reading your conversation we think we need to upgrade our HPT software. Its wierd because we've done this before without all the fuss. By all means keep up the ideas flowing and I will keep you all posted.
From reading your conversation we think we need to upgrade our HPT software. Its wierd because we've done this before without all the fuss. By all means keep up the ideas flowing and I will keep you all posted.
Thread Starter
Racer
Joined: Feb 2008
Posts: 427
Likes: 32
From: North Alabama
St. Jude Donor '24-'26
This is something thats causing us to scratch our heads too.
Safety Car
Joined: May 2006
Posts: 4,016
Likes: 93
From: St. Louis, MO
Tech Contributor
Yes, I run my TT Z06 in pure MAF mode using the enhanced operating system from HP Tuners. I do this because I was eclipsing the 67.75 lb/min airflow limit with ease and needed the extra readable range of the sensor.
The OP needs to provide much more information and be a lot more descriptive about what is happening. The current posts are too vague.
Changing the MAP sensor will never cause a problem unless you don't fix the linear and offset values for the MAP sensor in the calibration.
The OP needs to provide much more information and be a lot more descriptive about what is happening. The current posts are too vague.
Changing the MAP sensor will never cause a problem unless you don't fix the linear and offset values for the MAP sensor in the calibration.
Thread Starter
Racer
Joined: Feb 2008
Posts: 427
Likes: 32
From: North Alabama
St. Jude Donor '24-'26
Yes, I run my TT Z06 in pure MAF mode using the enhanced operating system from HP Tuners. I do this because I was eclipsing the 67.75 lb/min airflow limit with ease and needed the extra readable range of the sensor.
The OP needs to provide much more information and be a lot more descriptive about what is happening. The current posts are too vague.
Changing the MAP sensor will never cause a problem unless you don't fix the linear and offset values for the MAP sensor in the calibration.
The OP needs to provide much more information and be a lot more descriptive about what is happening. The current posts are too vague.
Changing the MAP sensor will never cause a problem unless you don't fix the linear and offset values for the MAP sensor in the calibration.
Safety Car
Joined: May 2006
Posts: 4,016
Likes: 93
From: St. Louis, MO
Tech Contributor
DSteck, I appreciate your input and I'm trying to relay info as accrately as possible. I'm the middle man if you haven't figured it out. I don't think we are using the enhanced OS for HPT and this is where we are going to focus. Crazy as it sounds, it was working before?!
dsx dot tuning at gmail dot com
Please describe exactly what problem you're getting.
