Hugo L. Posted June 7, 2008 Share Posted June 7, 2008 My car has a Rallitek Stage 2 tune (no AP, done in the car by Sean at Rallitek w/ the previous owner). Now, I'm just about to install an SPT intake I got for cheap in the classifieds. I read the reviews here beforeheand, and someone quotes the instructions as saying : "Watch your Air-Fuel Mix If you install the SPT High Flow Air Intake system and want to measure the results, be sure the air-fuel mix resets to original specifications prior to testing. Especially if the SPT setup is dynoed first, neglecting to reset the control unit will result in an air-fuel mixture that’s too lean. That will skew dynamometer results for the base line too high, and the comparison will not be apples-to-apples. Disconnect the battery so the control unit resets to ensure proper calculations from the air mass sensor input." So if I don't do this, will I run lean despite my tune? If I DO disconnect the battery, will I compromise my tune? WTF, I'm new to the Subie world and am completely lost here. I owned another tuned car and disconnecting the battery doesn't do sh*t to the tune. Link to comment Share on other sites More sharing options...
Infamous1 Posted June 7, 2008 Share Posted June 7, 2008 What type of engine management is on the car? Reseting the ecu will only erase the information stored on the ram which was learned by the ecu or loaded via AP. In your case you most likely only have a base map so resetting will do nothing but reset the car's learning parameters. Either way you look at it won't be a good idea to add an intake, especially the SPT. Link to comment Share on other sites More sharing options...
Hugo L. Posted June 7, 2008 Author Share Posted June 7, 2008 But it won't erase the map itself, right? Not saying the SPT is the best out there, I just want to try it, but don't wanna risk running lean or damaging something in the process. Link to comment Share on other sites More sharing options...
Infamous1 Posted June 7, 2008 Share Posted June 7, 2008 No it will not erase the base map. Link to comment Share on other sites More sharing options...
TPLGT Posted June 7, 2008 Share Posted June 7, 2008 Also, reconsider tyhe SPT intake. ALOT of [people npe this board say it does not help at all. Consdier keeping the stock box and getting a panel filter. Rehab is for quitters. Link to comment Share on other sites More sharing options...
Hugo L. Posted June 7, 2008 Author Share Posted June 7, 2008 I already have a panel filter. I read the reviews here, so I will try both back to back. If I don't like it, I won't keep it just to say that I have an intake. It is shielded tho. Link to comment Share on other sites More sharing options...
bosco Posted June 7, 2008 Share Posted June 7, 2008 disconnect the neg (-) terminal first then the pos (+) if needed reverse the order for an install. Stay Stock Stay Happy Link to comment Share on other sites More sharing options...
harman.khinda Posted June 9, 2008 Share Posted June 9, 2008 It is shielded tho. That 'shield' contributes to heatsoak on this intake. Link to comment Share on other sites More sharing options...
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