Which model do you have?

The BDD451A, or BDD451A2?

I've heard from some members that they both work.

I emailed the seller on Ebay and he says the BDD451A may cause a Check Engine Light.

I am committed to buy a used one (in our for-sale forum), but it is the BDD451A and I'm a little concerned on whether or not it works. The seller had it in his SRT and said there were no issues.

Any help?

Thanks,
Shawn