Customer ratings for 6PSI - 20PSI BOOST PULLEY UPGRADE KIT TO SUIT HOLDEN L67 SUPERCHARGED V6

Great bolt on HP for little $. Helps my holden move a bit easier with out stomping your foot to get anywhere. Just another nice product from MACE as usual. Cheers peeps

Great workmanship goes into these pulleys very happy with this item

The product was as described and was promptly delivered. I was particularly impressed with the the technical information provided pre-sale, as my application was not for a V6 Holden.

Top quality easy install with the right equipment good power gains made easy thanks.

This was a easy swap with the hub was done in about 20min Steve from the craigieburn store was excellent could not go wrong have recommend this and other products to people and told them to ask for Steve if the pick up from craigieburn.

Amazing customer service. Product was as described and in great condition

Great bang for your buck cheap easy hp gains i fitted the 12psi pulley runs great

I have not put it on yet but I like the fact that MACE make 8 rib pulleys as standard. I will get back to you when its on the car.

The machined pulley looks great, even the belt was a snug fit.. Very happy with the results. I would get the loan tool as i had a passionate time with the old pulley.....And Mace staff were easy to chat with.....

Fitted to WH Statesman with no other mods. No tuning required, the spark plug gaps did not need adjusting. The car feels a lot crisper to drive and the nose jumps up a bit further when accelerating hard. Definitely giving the expected jump in horsepower.

Haven't yet been able to fit pulley as my car is being painted, salivating at the promised performance gain once I get a chance to fit it.

Best value upgrade when it comes to kw per $ highly recommend mace for any l67 upgrades!! Will definately keep buying from mace! Professional caring experts!

I fitted the 10psi Kit in my workshop here, and it made the best bang for buck performance on this engine. the kit was a high quality, and the install instructions (via download off the site) were clear and concise.

Best bang for your buck

one of the best performance increases you will get for this kind of coin. hands down bang for your buck love it

Got it done with only old shifters, didnt have to take coil pack off, took under an hour to do.The stato does fat twins with a carload will send a pic of sum for ya site when I get the time

Very easy to install, well thought out modification. More blower noise and more power. Well worth the investment

very happy with this product easy to install and very noticeable definitely will be looking at more upgrades for my l67 Calais from mace engineering

This is truly an incredible 'bang-for-your-buck' product. With so many possibilities and options for quick power increases on the market, yet with most turning into disappointing, almost unnoticeable alterations, this is a guaranteed winner.

I recruited a mechanic mate (just in case!) but apart from a little bit of muscle flexing in the beginning, this was a very straightforward installation that was completed in under an hour. I do suggest a buddy to help though, as the 2nd pair of hands were hugely helpful (as is a decent set of tools).

Once installed, we took to the streets for a test run. My mechanic mate, a well-versed street and track racer who dabbles in high-performance turbo gear was noticeably surprised by the improvement. The car (a mundane V6 VX) even did its best to give us a decent tyre chirp as thanks, something my mate was not expecting!

Beyond the obvious power increase, the car in general runs considerably better. Overall performance is cleaner and smoother, meaning that the power benefits are only part of the overall enhancements.

Another great benefit is the 'bolt on, bolt off' design of the new pulley. This allows instant change-over of any sized pulley with a single tool in the space of a minute. In other words, modify your car from street to performance and back in no time at all.

All in all, for a few hundred dollars and very little time, this is a truly worthy investment.

Lastly, thanks also to the MACE crew. They were professional and helpful throughout and answered a tonne of questions prior to my purchase.

5 out of 5.

I purchased the 10 psi pulley. Got here quickly, easy to install and well priced. I'm really happy with the increase in power and I love hearing that supercharger whine in my XU6! Best bang for your buck upgrade ever!

I would highly recommend buying this mod for easy HP upgrade.. I found it a big help to hire the tool... took me about 1hr to do it and Im not mechanically minded.. thank you MACE

I expected a slight improvement with this product, but wow - what a difference! Torque, throttle response, supercharger whine, and power increases right through the rev range. It has since been coupled with Mace's 1.9 ratio rockers and it is a new car. Jumps off the line like an angry leopard even with the stock 3.08 open diff. Cannot recommend highly enough - does what it says on the tin and even a numpty could install it - 6 stars.

Nice power increase and very easy to install. a well thought out product with excellently designed tooling to make the install seamless.

Easy to install having the right tools but also recommend the pulley remover tool be used to get it all 100% with ease, but u can't beat it for a quick power up and a nice looking mod for ur l67

Awesome product, noticeable power increase and great sound, easy to install and looks great in the engine bay only problem was no sticker with the product, I like to show it off with :)

Would be better if it had the option for 8 rib belt to be
Supplied as well!!

Like the look of the hub and pulley. The fitting instructions could have been easier to understand if hard copy had been with pulley puller.

I have played with many different cars over the years, mainly Japanese models. This mod would be by far the most outstanding bang for buck i have ever come across. Coupled with the user friendly fitment instructions and the added convenience of specialised tooling, made the pulley upgrade the most well thought out, out of the box performance product i have ever seen . Well done Mace!!

I purchased the 10 psi pulley kit. Got here quickly, easy to install and well priced. I'm really happy with the increase in power and I love hearing that supercharger whine! Best bang for your buck upgrade ever!

Super fast delivery, a Mace employee answered my inquiry call at 10pm on a sunday! (Now that is dedication). This is just a first of many planed upgrades to my Girlfriends beloved L67. The instructions are so easy to understand and Pulley kit is a great price for what u get! I will be back to get more from Mace!

easy to install with little effort installed 10psi kit great way to start but now I'll be chasing 16psi and a whole heap more mods thanks to some great advice not a sales pitch from steve couldn't ask for better service had it the next day!

I'm running 15psi with Mace 1.91 rockers, W2A intercooler, extractors and 3" big bore, decat (in NZ) and custom tune. Getting around 300fwkw. Thanks for the great advice and service Steve.

after bolting on the new hub and fitting the 10psi pulley, the extra response and power was noticeable immediately! Easy to fit for anyone with basic mechanical skills. Would definitely recommend this kit and MACE to anyone looking for ease of use and quality.

was sent out fairly quickly, instructions on website are easy to follow, product works well and looks good