My supercharger story

[Worcester_spoon]

So, as some may know, I was part of the group buy for the Infinitas/GPower supercharger a few months ago. It’s been a bit of a journey, but today, we finally have an MOT!

Here is a brief history of my life for the past few months

Supercharger arrives - super excited
Off to Ross at RBM to have it installed
Install all good (Ross and his team are awesome)
After a little bit of driving, gets a misfire
Back to RBM to check coils, plugs etc - all good, but new plugs installed
Still misfiring
Change MAF
Still misfiring
MOT due, so off for its inspection (in hope). Fails badly on emissions
Decide it must be a map issue - Inifintas swear it isn’t, but aren’t much help TBH
Contact Josh at Severn Tuning. Long chat, decide to upgrade injectors ahead of custom map
Injectors arrive - some install challenges but go in ok
New map from Severn Tuning - still running rich and very smoky
Replaced pre cat o2 sensors, start thinking about new cat…
Lots of diagnostics runs/tests and some head scratching with Josh
Josh works his magic, 2nd new map installed
Seems to be running ok so…
… off for MOT - gets a perfect emissions test score!
We’re back and legal again!

Now just need to start driving it - have run it around a bit during the process and it feels like it just has so much power on tap and urgency right through the rev range, so looking forward to giving it a proper test.

The injectors were 365cc (stock is around 240) so we should be getting somewhere around 340/350bhp, and at some point I’ll dyno it to find out.

Suffice to say, after a long 3 months working through the issues and spending way more money than originally planned, I’m a happy man. Huge thanks to Josh at Severn Tuning and Ross at RBM, recommend both highly.

Off to the Alps in July for a 6 day road trip including Furka, Stelvio and Grossglocker to play with all that power, and my new LSD.

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[Zulu4]

Cool

[1536Z4]

Off to the Alps in July for a 6 day road trip including Furka, Stelvio and Grossglocker

Great news that you have hopefully got it all sorted . That drive through the Alps will definitely give it a good test . Don`t forget to take some photos .

[Mr Tidy]

Good to know you finally got there.

340 bhp and an LSD work pretty well in a Z4!

[Barty]

Awesome write-up, thanks for sharing. Keep those experiences coming, they’re extremely valuable to dreamers such as myself

[sars]

Awesome mod and well done for persevering

[buzyg]

Sure it will be worth all the effort. Enjoy.

[craig3.2]

Good result,and glad it got sorted.
Good work by Rbm and Severn tuning by the sounds of it.
Enjoy

I just wish someone with an M would post from the group buy,on their installs.

[Z450]

I bet that’s going to be fun to drive, time to enjoy

[Southwestz4]

Nice job what was the final bill
Did you do any brake or suspension upgrades to cope with the extra horses

[Zedebee]

I was lucky enough to see this car in the metal today. What a beast! The supercharger kit seems like a quality piece of engineering and works very effectively
Always good to see another forum enthusiast too.

[mac27040]

What boost does that kit make ?

[mac27040]

What boost does that kit make ?

[mac27040]

G-power state 310bhp for your kit

[Worcester_spoon]

G-power state 310bhp for your kit

But G Power don’t take into consideration the upgraded injectors and custom map… Trust me, it’s way more the 310.