The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Please Support JNZ Tuning
Please Support Morrison Fabrication

2G MDP effects on EGR removal

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

spyderdrifter

10+ Year Contributor
5,268
711
Jul 11, 2009
Somewhere in, Colorado
So I recently bought a DC Sports strut bar (n/t version) for my spyder, that requires the battery to be lowered or moved (mine was already low enough), and modification to the MDP location. I know what all that entails and this post is not about that. However I've read about how the MDP is only related to the EGR. My real inquiry is this... I've done emissions delete on my current spyder, with 2G head and 6 bolt short block, twice in the past. I know for sure I did everything properly, I.e... removed all associated vacation lines, EGR valve and solenoid, charcoal canister and properly blocked and sealed the EGR ports on the manifold. After all this, I experienced a fluctuating idle both times that never stabilized. So if I do think the delete again, do I need to also remove the MDP and block the port, or does it even matter and my idle is associated to something else? I unplugged the MDP a little while ago just to see if my CEL would illuminate while driving and throw a code. I got the P1400 code, but no CEL. I'm fine with this since I k kw my light works, it's been on plenty of times for other issues and comes on like normal upon start ups. So with these conditions, should I be fine with removing the sensor and blocking the port so I can install the strut bar?


Edit: I didn't remove the EGR solenoid, but left it plugged in and removed the vacation line from it.
 
Do you have a afr gauge? I didn't see one on your profile. If not, I HIGHLY recommend you to get a wideband. But unplugging the mdp sensor will will cause you to run lean. It measures air pressure in the intake manifold. Just move your battery to the trunk. Just go to a electrical supply store and you can get battery cables CHEAP. Just reuse the ends.
 
Getting an AFR gauge is on my priority of parts to get. My battery is not a problem being under the hood either. While your info is good, such as the running lean part, none of that is what I really asked. Running a little lean right now is probably good since I think it runs rich anyway.
 
The MDP isn't the cause of your idle problems and it will not cause you to run lean either. You can just unplug it you don't need to block it off unless you want to remove the sensor. The only negative effect would be the code or cel but it wont affect how it runs.
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top