While reading some of the posts about people running into problems when maxing out the voltage to the maf and the car running into limp mode when over 8 p.s.i is introduced to the car I thought I would try and help. For one, the maf on these cars is not highly restrictive, but could be taken away and minimal gains could be seen. However it is the range of correction of the stock maf that is the problem, in steps the new map ecu. http://www.powerhouseracing.com/mapecu.shtml This little puppy looks like the answer to some of you guys tuning woes. Basically it works just like an old school VPC but on top of that it also allows you to adjust a/f along with it.

Here is a little excerpt from the website:Most importantly, the MAP ECU does what other similar units on the market cannot do: convert the factory Mass Air Flow (MAF) or Karman-Vortex (VKF) signal into a speed-density (or manifold pressure) based signal, allowing the user to completely remove the factory air metering system. This adjustability means that the MAP ECU has coverage for over 90% of current production cars on the road today. One of the most powerful features of the MAP ECU is its ability to self-learn from factory MAF or Karman-Vortex meters. This feature means you can build a base fuel map using factory components then install aftermarket components and adjust the mapping to suit your needs. This makes the MAP ECU perfect for OBDII-equipped cars, since you can build a base map using the OEM sensors, and then remove the sensors so that no fault codes are tripped in the process. The MAP ECU basically becomes invisible to the factory ECU, but lets you remove the air meter and have all the advantages of an adjustable fuel curve by modifying the airflow input.

Some other features of the MAP ECU include a wide band oxygen sensor input for monitoring and logging the air/fuel ratio in real-time (a Bosch LSM-II sensor is available separately), TPS input for throttle-based fuel enrichment, and dual pressure switch circuits to activate auxiliary devices according to manifold pressure. The pressure switch circuits are perfect for activating additional fuel pumps, NOS systems, or intercooler spray bar systems. A basic installation of the MAP ECU requires connection to only four wires at the factory ECU (+12v Ignition, Ground, RPM input, and Air Flow Meter input to the ECU) making installation easy for even the inexperienced installer. The MAP ECU features a built-in -12 psi to +30 psi pressure sensor with a customizable pressure scale and a 0-8000 RPM engine speed scale.

Let me know what you guys think, or maybe just tell me I'm stupid because I'm an aggie.

 

Someone posted this device already. It is quite expensive for what you get.

Check out the other thread for more details. But with the eManage, can can switch to a MAP based system, including the sensors and harnesses for well under $150. So I don't see a huge benifit in in this product to the other piggyback systems out there.

 

Sounds cool. If the factory ECU is tuned properly then it works really good as well! Just a thought.

 

Can't you just reflash the ECU to work with a different higher capacity MAF?

 

This map ecu does not seem to be the solution to anything. The e-manage can easily add duty to the injectors after clamping the maf voltage and fueling to the MAP sensor.

 

i have no problems w/ my MAF boosting over 8psi on my TT system.... *yet*..

 

and an easy fix would be clamping the MAF voltage at 5V....if the problem does occur.