Sleeper Tuning

09/25/2026

Vlog # 130 Making videos while we can! The shop has been busy but w...

09/24/2026

RB28 progress report
With 10 days until RaceMotive we are hopeful Jorge will be joining us.
New engine, new Wiring Specialties harness, upgraded his G4 to the G4X Link ECU and new XClutch twin disc.

09/04/2026

We had the pleasure of working with .r33 (ig) clean and made 482whp on E85 and 398 pump 93.

For reliability we always chose Link ECU so we set Matt up with the Link G4X plugin play with supporting can lambda,oil and fuel pressure, ethanol content, and iat sensors.

Paired with our BTI Gauges 3.5”display mounted in the stock ashtray position for sensor monitoring and changing through boost maps for an OEM plus look.

Keeping it bottom mount ATP Turbo offers an upgraded Garrett - Advancing Motion gen 2 GTX3071R direct replacement

Went with GReddy Performance Products - GPP ECR33 FMIC
And a full A'PEXi exhaust/dp

Fuel system includes a set of Injector Dynamics 1050’s paired with a walbro 450lph E85 rated pump

At this power level we upgraded to an XClutch stage 2 ceramic and also did a timing belt service for good measure.

08/16/2026

08/12/2026

Since everyone is super concerned about us lifting the head,us included, we will do head-studs. 658hp is definitely pushing the limits but we are testing our turbo kit.

And as you can see she still has stock cams😉 for anyone who needs to see to believe

Sneak preview of our new rb manifold! More footage on our ig .tuning

We want you to have a flawless product at the end of the day that performs and lasts.

08/11/2026

658hp at 42psi on E85! We told you the was next to get it……

Engine is completely stock and still runs cold AC

This is our we have been working on to base our RB20DET turbo kit off. We are officially done with stage 2 of testing. May need a tire after this.

Our stage 2 turbo kit includes our Link ECU flex fuel package complete with egt sensors and an extended baffled sump as we get higher in hp.

Garrett - Advancing Motion G30-770 paired with our stainless manifold custom intercooler charge pipes catch can down pipe wastegate and trans catch can.
Injector Dynamics 1300’s brushless fuel pump

We have yet to upgrade the ignition coils but, we plan to do so in the future.

Kit is not yet ready for purchase but we are excited to share some progress as we get through the r&d phase. Hoping to have different kit options available on our website by early next year.

Visit sleepertuning.com for updates

08/03/2026

2JZ engine build coming together for Brandon’s MKIV Supra.

08/01/2026

Who loves an R33 GTR? We do! 700+ whp

Running our Link ECU package and tuned for flex fuel.

Utilizing our custom R33 ashtray mounted BTI 3.5” touch screen display. Keeping that OEM plus look.

Check out Rich’s top mount turbo kit making nice power with Garrett - Advancing Motion G35-990.

A ton of preventative maintenance and upgraded parts to hold the power.

New XClutch ,Tomei Powered Inc. cam gears and oil pump Kelford Cams Platinum Racing Products R35 coil kit, complete pro trigger kit, Injector Dynamics 1300’s ,timing belt service, water pump, head studs, a big brake kit and more.

So if Rich ever wants to turn it up. 🤌🏽

07/30/2026

This is the latest update of my Badass Street Cars list.

It is a work in progress.

If you see a mistake on your entry, let me know, or if you'd like me to add your time, just leave the ET, MPH, vehicle info etc, plus any other cool details you'd like to share.

I have this same list with more detailed entries that I'll also be posting.

I have notes scattered around and some comments are buried pretty deep so I may have missed some, so just let me know again here.

07/07/2026

Matt’s GTR makes 740hp with Garrett - Advancing Motion G30-900

Vlog # 127 Matt's GTR build. 2.8 Stroker. Full engine build to dyno...