A tuner form either www.Brenspeed.com or www.bamachips.com will be your best bet! It will save you money in the long run to get a tuner and CAI package. Both of the places mentioned above will provide you custom tunes for your car and mods. You have quite a bit of adjustability with the tuners...OMG YES will it eliminate throttle lag!!!!!
http://www.sctflash.com/product_xc2.php
http://www.diablosport.com/index.php?module=htmlpages&func=display&pid=51
Thanks for handling the "Biz" Dawg.
Different elevations has absolutely nothing to do with how a custom, canned or stock tune responds...Atmospheric conditions are adjusted and compensated through the MAF meter, exclusively..Otherwise you would also have to get a different stock tune, every time you're car enters into a different elevation, which wouldn't make any logical sense at all..It's just like Doug from Bamachip's mentioned in a past thread, this isn't the old speed density days of the early Fox Mustangs..
Well in that case, you had better relay your last quote, to Doug from bamachip's as well being that he's the source, I obtained my info. from in the first place..if I'm able to locate his post through the archives ? I'll re-post it in this thread..I know my car doesn't run nearly as well in higher altitudes. The lack of air molecules will go beyond the maf's capabilities at times.The maf is only good for fine adjustments which do indeed work very well overall, I'll give you that. Before my car was blown I had a canned tune with my Steeda CAI which was specific to the CAI, gears, etc. The engine shut down 12 times in one 300 mile trip do to running lean in higher elevations. Back home where the elevation is anywhere from sea level to 600 ft above the car only shut down 2 times in 500 miles of driving. After having the a/f ratio adjusted a bit it never shut off again. Stock is different than a modified engine for sure. The fact that a canned tune may be leaning one way or another in the lean/rich department causes the maf's ability to adjust to be limited at times. Put that in your bong and smoke it.
I don't deny the truth behind Doug's statements. I'm just showing through my own experience that there are exceptions to the rule. What you are saying is true is most every case. My experience is just one where having a canned tune customized was essential and was actually caused by the fact that the canned tune was leaning too far one way on the a/f ratio. The change in elevation during my trip aggrevated the problem to the point where it was beyond the maf's ability to correct it.