| Same as for the water bypass. It cleans up a few areas that could cause, leaks, vacuum issue's, etc. The AIV is the air induction valve, Its part of the emissions system. Basically it introduces clean air into the exhaust before the cats to cool it down and make the cats work more efficiently. Most ecu tunes bypass this system any ways. People pass emissions without this system and a good tuned ecu. Removing it eliminates a mess of vacuum lines and cleans the engine bay up some. The solenoids by the battery are the AIV solenoid and the EGR solenoid. The EGR is Exhaust gas return. It takes burnt gases from the exhaust and reintroduces them to be consumed by the combustion process. It was thought to lower combustion temps and produce less nitrogen oxide. Its a great idea but unfortunately most of the time gets clogged with carbon or malfunctions in some other way. Nearly impossible to fix and expensive to replace. EGR deletes do affect emissions but the car can pass with out from what I've read. Those two pita pipes to remove from the bottom of the plenum. Thats egr. Deleting it take the plenum pull from pita to 30 min job. Cleans the engine bay up quite a bit. Also if the egr malfuntions at just the right time it could cause detonation and damage the engine because it actually reduces the o2 going to the combustion chamber. And from I know it doesn't function while the engine is cold and while at wide open throttle. Both of the above deletes are in my opinion to clean the engine bay up. Make maintenance easier and cheaper in the long run. As far as performance. Minimal if any gains. Saving money paying for plenum pulls and engine pulls with all this in there compared to taking it out the first time and saving the hours it takes to work around all of it. Worth it.
 |
