RRRacing

Hard to say exactly, but in terms of ignition timing it’s probably equivalent to what we would get by running 97. The water/meth is mainly used for additional safety margin and cooling effect at high rpm only.

Rafi

polobai

Got it. What ratio are you running at those levels-50/50?

fsmich

If you can modify the oil cooler kit to fit the 991.2's, I'm placing an order!

97supratt

What’s the most power that’s possible on pump gas 91? Maybe if the injectors are upgraded.

RRRacing

Our Oil Cooler requires tapping into the plastic oil pan, which we have not tested yet but certainly open to.

91 won't impact power much, the methanol helps offset the lower octane. There are also quite a few quality octane boosters on the market i.e. VP or similar. Only really needed if you are going to push the car hard.

blackoutz

Looking at possibly getting this get in the coming months. Can any current owners of this kit share a update of how they are liking it? any reliability problems? Any issues with customer service from RR Racing?

thank you

Tyson Becker

I just sent them my 2015 Targa 4S with Power Kit for the stage 2. Look forward to seeing videos of them working on it and the dyno.

rjongco

looking forward to seeing how it turns out

Tempus fugit

I've had mine for about 11 months and just over 5K miles and absolutely love it. Customer service has been fantastic. The extra power is incredible and yet the car is still very drivable on the street.
I wasn't very knowledgeable about methane injection before this so I didn't know what to expect with methane consumption. It turned out to be very little unless you're really hammering on the car. In normal driving I might use one tank in 3-4 months. Pushing it hard over a couple of days during a Rennsport Dragon Rally it consumed about 3/4 of a tank. I believe R&R sized the meth tank to allow you a full day at the track without having to do a refill.
Note that you might need to change or eliminate your catalytic converters (I did). Also note that the supercharger oil should be changed every 5K miles and required the rear bumper to be removed for access. Not a big deal for me but worth noting.

TheChemist

I've been meaning to post a review of my car, as I also went with the RR supercharger kit and made a handful of other mods around the same time. I've had the supercharger on my 991 S for about 9 months (I was the 2nd customer after tempus fugit, and first customer with a manual transmission). Overall, same thoughts as above, the extra power is perfect and has truly transformed the car, makes for an epic combination with the manual transmission and catless Soul exhaust. Prior to the SC, I was not overly thrilled with the car and was planning on trading-in for something that was a bit more hardcore and with more power. Now, those thoughts of trading-in are gone. The power and overall level of intensity and perfect for the street, if feels like how the 991 should have come from the factory. The power delivery is still NA-like, and builds and builds with the revs, but still provides plenty of thrust at the lower RPMs, manageable level of power with the grip that these 991s have. The stage 2 kit is tempting, but I think the power now is perfect for my uses, but I'll likely go with it later this year (why not!). I haven't taken the car to the track, but I know Rafi (the developer) has many times. I'm not particularly concerned about longevity of the engine or transmission, I think the additional strain the supercharger puts on the drivetrain is modest and well within the limits, and I tend to drive responsibly.

Sporty

Nice to hear these reviews. I am contemplating going this route down the road. I currently have a 997 and love the look of the 991.1. I don't like the 991.2 nor 992 and this is a great alternative. Where in Jersey are you, perhaps a test drive or if you are looking to sell could be mutually beneficial.

TheChemist

Let's discuss post pandemic

flsupraguy

lol

Sporty

Sure, PM me whenever, before after whatever, you are comfortable with. I like the 991 in white also.

TheChemist

Sounds good