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ar0ck · 12-27-2007, 10:13 AM

I would go with the mail order for your car. I wouldn't bother with Hyper tech junk. I went with madZ28 for my car and the price was good, and the tune is pretty close. If you ship your computer out priority mail the turn around time is usually really quick. When they send you a core computer, its a refreshed PCM that already has a OEM LT1 tune for your year car, your not just getting some random junkyard PCM.

LT4 Knock Modules are usually for cars with a little more bolt ons. From my understanding its supposed to be less sensitive to engine knocks & noises possibly caused by after market rockers, headers or even a big cam. I still have the stock knock module on my car but it was "desensitized" in the tune.

12-27-2007, 10:13 AM	#4
ar0ck Resident Camera Guy Join Date: Aug 2004 Location: North Jersey Posts: 10,971 iTrader: (2) Social Networks:	I would go with the mail order for your car. I wouldn't bother with Hyper tech junk. I went with madZ28 for my car and the price was good, and the tune is pretty close. If you ship your computer out priority mail the turn around time is usually really quick. When they send you a core computer, its a refreshed PCM that already has a OEM LT1 tune for your year car, your not just getting some random junkyard PCM. LT4 Knock Modules are usually for cars with a little more bolt ons. From my understanding its supposed to be less sensitive to engine knocks & noises possibly caused by after market rockers, headers or even a big cam. I still have the stock knock module on my car but it was "desensitized" in the tune. __________________ Last edited by ar0ck; 12-27-2007 at 10:16 AM.