These aren't track times, but with a GTech meter I ran 15.2's with the stock 17's, and 15.5's with 20's. Same air temps and the conditions were nearly identical. I have the hypertech, but don't use it now that I have the nitrous. Have fun at the track.

 

awesome, Im hopefully going to have my custom tune to get me the lower 15s easy

 

let us know what you run.

 

will do bro Im hoping to get my tune within 10 days before I go to the track but i doubt it... my 17s are going on today and I cant wait to be able to stomp on the peddle again...

 

Maka, what I was saying in an earlier reply, was you'll be fine. As in I think 15.2-15.4 is doable. Tq. Mgmt kills ETs. Some of the bed covers I've heard anywhere from 100-200# extra. If u are curious on weight of your wheels. Put 1- 17 combo on scale. I'm curious on the 17 weight. Steel or alum.? Also, please tell me tire brand/specs. Then toss 22 on scale for your own info. Post its weight/specs too, if u like. We'll go from there. I curious what you'll gain w/ tune, ET-wise.

 

Well most likely Im going to soon be going with a blackbear or wheatley tune which means I would have to send them my pcm ... wont be until after the track. I put the 17s on they are the cheaper steelie wheels, they are grey with holes all around the GMC center cap. They are running 275/65r17 I think... my 22s are running 305/40r22 and trust me they weigh at least 20 pounds less.. I put the 17s on and they spin like crazy... I have a soft tonnaue bed cover

 

The 22s are lighter? See, I thought you had 17" alum.( they have those, right?). Do u have hitch? My bad on tonneau. BTW, what state is blackbear from? I've heard name before. When I had tune, I felt a difference. Just to do dyno pulls, tuner had to remove various GM imposed strangleholds. Have an ultimate ET goal? Almost forgot, I don't know weight(wt). of NNBS. Extra fuel in tank slows too. Just a few thoughts to try to help u run the number.

 

Nooooo the 22s are pounds heavier than the stock 17s and I think they are alum. they are like the spare rims but in grey.. No I dont have a hitch I got a 2wd with no hitch so I could go fast. I have 3.23 gears. I will be sending my PCM out to him monday overnite and then he will get it tuesday, tune and then overnite it back to me same day... so I should have it Wednesday. Im going to be close to empty hopefully when I get there with the good 50 degrees or below NY cold... Im going to chek my weight later.