SJC Tuning and Performance

SJC Tuning and Performance Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from SJC Tuning and Performance, Automotive Customization Shop, Hampton Downs Motorsport Park, Te Kauwhata.

04/10/2026

Another 8hp70 we tuned a while back for Mad Barras, here is a great example of some real life footage.
Over 800hp doing a burning just changing gears with ease.
Upshifts are crazy fast, even the downshifts are quick, best part is every shift is reliable.
After the burnout switch it into another mode and have driving like an oem BMW. 💪💪

09/09/2026

Remote tune for on very cool FC RX7. K24 turbo doing the business.
Happy with how this shifts, few track days and a couple more tweaks and it will be 👌

07/09/2026

Remote tune for TurboLamik.
K24 turbo running Hondata, shift cuts were not playing the game but we managed to get it shifting crispy without them 💪💪

06/09/2026

Remote Turbo Lamik tune for Rico ✨

Dialled in torque, torque reductions, blips,
Shift points, drag modes and a few spicy features.
We are 95% there.

Listen to how crisp this B58 on 45psi shifts through the gears 💪💪

What a wild week last week. Glad to be able to help me55utr and his GTR get through his dyno session by jumping on and s...
18/08/2026

What a wild week last week.

Glad to be able to help me55utr and his GTR get through his dyno session by jumping on and sorting the Turbo Lamik out, making a crazy 1785hp and the trans held solid. Excited to get this dialled in, billet motor street driving to an animal down the strip one to watch out for.

Next was MMP in his X3M bmw, after having a few issues he reached out and we sorted his turbo lamik tune at the track, 1700nm no shift cuts and the box held well deka clutches doing the job, leading to a PB of 2.5seconds from 100-200kmph and setting the world record on day 2 for the X3M down the strip at 8.4. This definitely has more in it. Watch the incar this car is crazy fast.

11/08/2026

Another 8hp we tuned absolutely ripping 👍👍

Shop car is starting to take shape. Not long before it’s sitting on some wheels.Meeting with the cert man went well and ...
02/06/2026

Shop car is starting to take shape.
Not long before it’s sitting on some wheels.

Meeting with the cert man went well and everything is progressing smoothly.

Grant at Paralax is absolutely killing it on the chassis job. His skill set is unreal couldn’t be more impressed.

So excited to be able to cruise the streets in this one day.

Another car out the door,We fitted the motor 1uz with custom sump, built a full stainless exhaust, custom wiring with li...
28/05/2026

Another car out the door,
We fitted the motor 1uz with custom sump, built a full stainless exhaust, custom wiring with link ecu. Engine running 12v with truck still running 24v.
Will sound good when it’s slinging some mud.

Good to have old faithful of on the dyno for a health check. One of my 1st jobs when opening shop was wiring, tuning an...
24/05/2026

Good to have old faithful of on the dyno for a health check.
One of my 1st jobs when opening shop was wiring, tuning and helping plumb this car.
3 year later, over 400 tyres later making 600hp all its needed is oil and filters.
Many upgrades to the car along the way but the engine package still stays the same.
Good car this one.

Had the pleasure of going down to in CHCH to finalise the trans tuning on this epic built GTR with ZF8HP. Loaded in som...
15/05/2026

Had the pleasure of going down to in CHCH to finalise the trans tuning on this epic built GTR with ZF8HP. Loaded in some of my new shift strategies and off we went. Making them shift fast is one thing, but making them drive in auto silky smooth is a whole different level. It takes hours to get it amazing. Throttle blips, subtle shift cuts in the different modes. This has 3 auto modes and 3 manual modes from smooth to sport to race shifting. Iv worked hard on strategies between TCU and ECU to keep making this setup better.

Final result, a car that drives like a late model bmw,
Yet in sports mode drives like a high end performance car, then manual modes where its like driving a race car.

The level on this build is unreal everywhere you look is attention to detail. has knocked this one out of the park.

Address

Hampton Downs Motorsport Park
Te Kauwhata
3782

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