Air Mass Sensor replacement, good investment
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I have a 97 RUF CTR-2 that I have been having an overboost problem with and have been working making various changes to try to solve the problem. The overboost is still there and I will be checking the wastegate lines next. However one interesting result came from changing the Air Mass Sensor.
My car did not like lower gears and the throttle felt heavy and abrupt when used in first or second gears. The idle was not smooth and it was not the easiest starting. SInce the change in the AMS, its like wow. The car starts without hesitation, purrs at idle and the throttle response is like haven taken 100 lbs off the flywheel.
The AMS are available from your dealer, however if you like to save a couple of bucks you can do what I did. I purchased a BOSCH OEM unit for $380. vs the $800. for the Porsche unit. The Bosch part number B3130-128512
Here is the link to one supplier, others are available.
http://replacement.autopartswarehous...Air+Mass+Meter
Good luck
LAT
My car did not like lower gears and the throttle felt heavy and abrupt when used in first or second gears. The idle was not smooth and it was not the easiest starting. SInce the change in the AMS, its like wow. The car starts without hesitation, purrs at idle and the throttle response is like haven taken 100 lbs off the flywheel.
The AMS are available from your dealer, however if you like to save a couple of bucks you can do what I did. I purchased a BOSCH OEM unit for $380. vs the $800. for the Porsche unit. The Bosch part number B3130-128512
Here is the link to one supplier, others are available.
http://replacement.autopartswarehous...Air+Mass+Meter
Good luck
LAT
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Originally Posted by Kevin
I recommend that all 993TT replace there MAF's if they haven't done so..
Long term fuel trim is calculated off of the primary O2's.
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Originally Posted by Kevin
I recommend that all 993TT replace there MAF's if they haven't done so..
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LAT.... if all checks out PM me...... I have a solution that will retain your stock frequency valve but eliminates boost spikes.
I can provide pictures and instructions
I can provide pictures and instructions
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MOD500. on the CTR-2 all I had to do is remove the airbox and it is right there. I think it took me about an hour to an hour and half total. I would rate it a 4 out of 10 for difficulty.
PM if you have any issues, I will try to help.
Good luck.
LAT
PM if you have any issues, I will try to help.
Good luck.
LAT
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Originally Posted by MOD500
How easy is it to change the MAF, DIY or dealer job at next service?
Thanks
Martyn.
Thanks
Martyn.
Pic #2 next to the air box on its left
Pic #9 in greater detail.
Have at it, its no problem...
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K24madness,
When you say primary O2 sensor, I assume you mean the pre cat one, please confirm.
What do you notice after the change in the way the motor runs?
Tahnks
LAT
When you say primary O2 sensor, I assume you mean the pre cat one, please confirm.
What do you notice after the change in the way the motor runs?
Tahnks
LAT
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Originally Posted by LAT
K24madness,
When you say primary O2 sensor, I assume you mean the pre cat one, please confirm.
What do you notice after the change in the way the motor runs?
Thanks
LAT
When you say primary O2 sensor, I assume you mean the pre cat one, please confirm.
What do you notice after the change in the way the motor runs?
Thanks
LAT
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The only way to accuratly look at a O2 sensor is with a O scope. The OBD2 program is to slow.
A 10 year old car with 25,000+ miles is a good canidate for preventive maintenace in this area.
A 10 year old car with 25,000+ miles is a good canidate for preventive maintenace in this area.