at 270 8th St E, Saint Paul, 55101 United States

We provide GM performance tuning and modifications to the most modern LSX/LTX cars and trucks. Maximizing performance and overall drive ability!

270 8th St E
Saint Paul , MN 55101
United States
Contact Phone
P: (651) 363-1193


Price category
$$ (10-30)

Company Rating

411 FB users likes CJTunes, set it to 30 position in Likes Rating for Saint Paul, Minnesota in Automotive category

Throwing it back with an early 4th Gen, 98 T/A very clean car with solid numbers for an auto.

Published CJTunes on 2016-04-28 00:26:19 GMT

.....and another one. H/C 9.1 lower 2.4 upper, flex fuel on 70% ethanol. Just shy of 750whp and 700 ft/lbs of torque.

Published CJTunes on 2016-04-13 01:08:20 GMT

Nice tune only 40whp gain on an LSA Powered G8.

Published CJTunes on 2016-04-12 20:03:46 GMT

More dyno fun, LSA supercharged G8 laying it down to the tune of 660whp/620lbs. Very well laid out home built combo. Surprising it made as much as it did on 10.7#s.

Published CJTunes on 2016-03-30 00:49:46 GMT

Just finished TUTD shifting on a customers pristine 84 Blazer. The truck has an L92/6l80e setup. Rev matched downshifts of the 6l80e is fantastic. Very well built and fun to drive machine..

Published CJTunes on 2016-03-23 18:28:22 GMT

First higher hp CTS-V of the season. We just added a BTR stage 2 PD cam on top of existing mods. 640whp, drag radials and cool weather make this clean coupe feel like a monster!

Published CJTunes on 2016-03-11 03:45:40 GMT

We have had a ton of CTS-V inquiries over the last couple of weeks so here is a simple yet super effective V we did late in the season. It has a Airaid intake, 9.55 lower, 2.65" upper pulley setup and has ran 11.3's @ 121mph. At the end of the year we added our flex fuel kit and retuned. Car picked up 40whp/50ft,lbs over pump. This will be a very low 11 second car with nothing more than pulleys, intake, injectors and tune. http://cjtunes.com/projects/jacks-11-cts-v/

Published CJTunes on 2016-02-02 19:41:43 GMT

Not everything we do makes huge HP, here is Andy's HEAVILY modified 00 Silvy with a stock 5.3 putting it down. We were able to pickup 34whp with tuning alone!

Published CJTunes on 2016-01-10 13:56:39 GMT

Roberts 06 Vette made some really solid numbers yesterday. The 404cid engine built by Total Engine Service put down 772whp on pump gas and 838whp on E55 at 14 psi of boost from a V3 TI trim blower. The car was shipped to us from Texas for installation of a A&A fuel system kit and tuning. We also installed a complete flex fuel setup which allows the customer to run any blend of fuels without having to retune!

Published CJTunes on 2015-12-24 20:01:21 GMT

2010 Camaro tuned by Carl at CJTunes...470 rwhp.

Published Jason Morrison on 2015-12-19 00:51:18 GMT

For those that have used our services please take the time to submit your sweet ride so we can update the projects section of our site. THROW COOL PICS IN THE COMMENTS IF YOU HAVE THEM!!

Published CJTunes on 2015-12-18 22:40:00 GMT

One of the best Gm tuners in the business!

Published Tony Bickford on 2015-12-18 18:10:16 GMT

Very happy with my tune. It turned out better than I was hoping for! Thanks Carl.

Published Dustan Watkins on 2015-12-18 17:43:54 GMT

Thanks to everyone for making this possible!

Published CJTunes on 2015-12-18 16:34:24 GMT

For those of you looking for 25-30 more rwhp/torque our of your 15-16 Silverado/Tahoe/Suburban check out our flex fuel conversion kits. http://cjtunes.com/store/flex-fuel-conversions/14plus-gm-truckssuv-flex-fuel-conversion/

Published CJTunes on 2015-12-17 19:12:36 GMT

Tuned vs Untuned

Published CJTunes on 2015-12-15 15:43:40 GMT