best 2.5 adapter plate?

[mercrazy]

is the oval or square plate best?
how much difference?

[Jay Smith]

Thats an opinionated question and since there has been THOUSANDS of posts as to the pro and cons of the benifits or the lack there of comparing adapters plates , tuners sizes , lengths and shapes I won't go any farther other than to say I like the progressive rectangle tuner and adapter( 1992-95 ish EFI ) after modifications have been done. Moving air DOES NOT like to drasticly change shapes when in a volicity situation. My opinion is that different shapes of tuners ( oval ) was no more than a marketable ploy to get the comsumer to spend money , on what was believed the to be the "new real meal deal". And testing them both I have found that in a controlled enviroment the new was no better , just another smoke show! If I were in the market for a adapter plate I would buy the 2.5 one piece plate with tuner attached that I could get cheaper either shaped. There are some older "bargin" pieces out there that are just as good but have been disguarded and sold at a reduced price because they are "dated" and I assure you you will not see the difference on a stop watch or a GPS.

Jay @ JSRE