Jekyll & Hyde Performance

Jekyll & Hyde Performance Custom stand alone and stock ECU calibration. Specializing in late model GM, Ford, Mopar applications. Bolt ons to complete builds offered.

Operating as usual

11/13/2021

That's a wrap!! 940/[email protected] with it ending at 15.5 stays above 900rwhp all the way to 6200. Record for the 58mms 😜. Pretty sure we could do [email protected]. Through a TKM 6L80 with circle D triple disc. πŸ’ͺπŸ’ͺ

11/13/2021

Goal was 800 with this [email protected]. We crushed it with 887/[email protected] with the Underpressure Power & Performance 58 kit, Shearer Fabrications intercooler 68 degrees at start and ending at 89 vs the treadstone that was seeing 180s πŸ€¦β€β™‚οΈ. Also seeing more boost at lower duty. New Circle D Specialties triple disc doing great as well. Might turn it up some more tomorrow πŸ˜‰.

James LME 440 stroker going together for his C6Z. You don't want to miss this one. Should be a stout setup.
11/12/2021

James LME 440 stroker going together for his C6Z. You don't want to miss this one. Should be a stout setup.

10/31/2021

Canadian Crippler showed up in need of fueling help. Tune was wrong to say the least. Virtual tq tables untouched, no break out harness, trans tune πŸ™„, still showed having phaser in place, on and on. We equipped it with a Armageddon Turbo Systems drop in. Beginning numbers are 563/566 ending 660/637 backed by 657/[email protected]. This is a built 6.2 and 8L90 with circle D Converter. Custom trans cal as well taking advantage of that minimum rpm drop that comes with the 8 speeds. Whole new truck for sure. New air filter setup coming and LT4 HPFP/LT4 injectors. Check out that graph πŸ“ˆπŸ˜‰

Late Model Engines  416 all buttoned up for now. Those BRODIX Cylinder Heads  look great. Waiting on intake and front ac...
10/29/2021

Late Model Engines 416 all buttoned up for now. Those BRODIX Cylinder Heads look great. Waiting on intake and front accessories then out to Jamaica it goes. 440 stroker getting started tomorrow for James C6Z. Hyde mode will be engaged.

Late Model Engines  416 built for boost getting assembled before heading out to Jamaica. This will be a complete turn ke...
10/28/2021

Late Model Engines 416 built for boost getting assembled before heading out to Jamaica. This will be a complete turn key engine from intake to pan with all pulleys and accessories. Also has BRODIX Cylinder Heads BR3 heads and our custom spec'd twin turbo cam from Texas Speed & Performance . It will be powered by a Haltech ECU. Monster Clutch Co. of course and Underpressure Power & Performance fender mount turbo kit.

Lets see what we can do with all the new changes. πŸ’ͺ
10/27/2021

Lets see what we can do with all the new changes. πŸ’ͺ

Lets see what we can do with all the new changes. πŸ’ͺ

Few months ago I decided to let one of my good customers buy my Wilson billet intake for his upcoming twin turbo setup. ...
10/05/2021

Few months ago I decided to let one of my good customers buy my Wilson billet intake for his upcoming twin turbo setup. So I had to get me a matching Late Model Engines intake for my 430 they just finished up. This thing is gonna be the nastiest it's ever been.

09/30/2021

C6 Cammed/P1SC/ headers/6L80 making 563/[email protected] a monstrous 4 psi. Look forward to turning up the boost and installing a converter on this one.

09/25/2021
LME 427 and heads, TSP 2.2 cam, and Monster clutch

First start up on this C6Z with a Late Model Engines 427. Has their ported heads, Texas Speed & Performance 2.2 cam and Monster Clutch Co. . Stock manifolds for now hopefully will get some headers in the future. Excited to see what she can make.

This Late Model Engines  427 is ready to crank. Just waiting on rockers to arrive so we can measure pushrods and get it ...
09/19/2021

This Late Model Engines 427 is ready to crank. Just waiting on rockers to arrive so we can measure pushrods and get it going.

97 Cobra had a bad transmission so went ahead and swapped out for a built T45 with upgraded spline, new posi, diff with ...
09/05/2021

97 Cobra had a bad transmission so went ahead and swapped out for a built T45 with upgraded spline, new posi, diff with 4.11 gear tricked out by Never Enuff Performance Racing , Hurst shifter, and clutch.

08/07/2021
Novi C6 on E85

Josh's Stock motor,stock cam, stock TB, Stock intake, stock wires, stock converter, 2.73 gear...you get the point 🀣. Novi 1500, headers, ID1050x rolling [email protected] in the 1/8th previously at 600/577 on 93. Switched to E85 and now making 777/[email protected]. Track tomorrow πŸ˜‰ Check out that graph in the comments.

08/05/2021

Mustang GT 6.0 LQ4 swap with MS3 cam pushing 412/412 all motor and 540/702 on a 150 shot through a 4L60. Can't wait to see what she does at the track.

Everybody welcome Jaden to the team! He's going to be be helping out around the shop and learning along the way.
08/01/2021

Everybody welcome Jaden to the team! He's going to be be helping out around the shop and learning along the way.

Everybody welcome Jaden to the team! He's going to be be helping out around the shop and learning along the way.

Another one. Let's get it πŸ’ͺ
07/15/2021

Another one. Let's get it πŸ’ͺ

Come on out to The Big Country Race Way on the 16th! We will be tossing some money to the fastest street car of the nigh...
07/12/2021

Come on out to The Big Country Race Way on the 16th! We will be tossing some money to the fastest street car of the night!

07/10/2021

Rays C7 equipped with a P1SC procharger, Jekyll & Hyde custom cam, Monster LT1-S clutch, TSP drop in rods and Pistons, DSX flex fuel kit, DSX aux pump making 654/[email protected] psi on 93 and 753/[email protected] on E60.

07/08/2021

Rays Procharged C7 ready for him to break in the new motor. Look forward to seeing what she can put down on the corn. Texas Speed & Performance West Performance

06/24/2021

Randy's Fbody setup with new 427/Glide on a Holley Dominator. Progressive 500 shot making 833/905 but we aren't done there. Had big pressure drops on the fuel pump side for the nitrous and it was turning the the spray off mid run. Going to address those issues and get some PTFE lines on the car for the new ignite red supply. She's gonna be rowdy for sure!!

06/22/2021

Single turbo 6th gen getting dialed in. This was just a 5psi pull looking to push it to 10ish. 619/627 with some mild mid run breakup. Lots to do but going in the right direction for sure.

06/19/2021

Back in November we tuned this SS with cam and LSA supercharger on 93 making 635/651 STD. It now has a ZL1 converter and on E85. New trans and tune came up with impressive 728/704. Check out that Dyno graph.

06/18/2021

2013 C6 that we installed our custom cam, ARH headers with cats, and Vararam snake charmer ram air intake. Making a stout 470/449.

06/14/2021

Adams 72 C10 making a solid 446/577 on a Fi-Tech. Log showed a restriction so he pulled off the air filter and it picked up to 476/582 she's pretty stout!

06/13/2021

2002 cammed C5Z06 came in making 396/386 on someone elses tune. Car also wouldn't run with AC on, die on hot starts, and had bucking at low speeds. All that is sorted making 421/407 and gains across the whole powerband. Car runs amazing now with zero issues. As always includes our 30 day free revision guarantee and track support. Dyno sheet in comments.

DYNO day will be 19 Jun starting at 2 p.m! Food trucks/local radio contact me to set something up. Pulls will be $75 for...
06/07/2021

DYNO day will be 19 Jun starting at 2 p.m! Food trucks/local radio contact me to set something up. Pulls will be $75 for two pulls. Portion of this money will be going to our Annual Air Force ball so feel free to donate a little extra 😁. RWD cars only at this time. Really would like to make this an annual or biannual event. Please contact me to get a skeleton lineup of cars for logistics. Highest HP will get some cash back in their pocket. Lowest Hp will also get a kickbackπŸ˜‚. Share away.

DYNO day will be 19 Jun starting at 2 p.m! Food trucks/local radio contact me to set something up. Pulls will be $75 for two pulls. Portion of this money will be going to our Annual Air Force ball so feel free to donate a little extra 😁. RWD cars only at this time. Really would like to make this an annual or biannual event. Please contact me to get a skeleton lineup of cars for logistics. Highest HP will get some cash back in their pocket. Lowest Hp will also get a kickbackπŸ˜‚. Share away.

06/06/2021
Twin turbo Cobra 6R80

First pass on a trans brake leaving on basically no boost. Couldn't make any more passes because no cage πŸ₯΄. Twin 62/6R80 on a MS3 ECU. Car is gonna be quick when we toss some boost to it and dial in suspension.

Few updates on some builds we have going on. The C6Z motor with dropped valve is headed out to Late Model Engines and kn...
06/03/2021

Few updates on some builds we have going on. The C6Z motor with dropped valve is headed out to Late Model Engines and knocking out another cam swap with ARH on another C6. We also are getting engine ready for assembly for the procharged C7. Been a long wait for the parts and machining but should be worth it. Look forward to the results.

05/31/2021

Stock 2020 Shelby GT350 making 445/388 rolled her to 173mph 😁. Flat plane crank screaming.

05/28/2021

Brad's Camaro equipped with fresh Late Model Engines 1200hp capable 416 stroker built for boost and CNC'd heads. It also has a Texas Speed & Performance bald eagle blower cam. It made 506/495. It will be getting a Whipple setup in the future.

05/23/2021

Blue balls putting in work again this weekend with some money runs. Still trying to dial in shift points but stoked with how she's doing.

05/15/2021

Hide those race cars. [email protected] with a 1.63 60ft banging off limiter 2-3. Once I get that sorted she gonna be rolling. 6.2/8L90 trans.

05/12/2021

We will be closed this Thursday-Sunday. I will not be responding to text/calls or PM during this time. Normal Operation will resume Monday.

05/09/2021

2000 TA making 330/350 through a 4L60. Car has headers and exhaust.

If you love your LS7 then get those heads fixed. This stock LS7 now has a crack in the cylinder, destroyed head, and pis...
05/05/2021

If you love your LS7 then get those heads fixed. This stock LS7 now has a crack in the cylinder, destroyed head, and piston. It will be getting the full Late Model Engines treatment with our custom grind cam setup. Look forward to seeing how it does when finished.

Address

Buffallo Gap Rd
Abilene, TX
79606

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm
Saturday 3pm - 6pm

Telephone

(210) 381-8515

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Comments

You know you mean some serious business when your crank is billet!! Callies Performance Products Jekyll & Hyde Performance
Jekyll & Hyde Performance Released another healthy breathing Mustang into the wild πŸ˜ŽπŸ‘
I'm excited to get "Orange Crush" tuned and breathing better here soon. πŸ˜€
Thanks again !
Thanks again
Allow me to introduce "Mr. Hyde", my 2005 GTO. LSA install going in this winter.
I love the need for speed