RRRacing

iTrader: (1)

The answer that IH8RICERZ gave is as good as it gets. That was a pretty spot on explanation. Feel free to give me a call any time to discuss. 484-756-1777. If you think you're good to go, it's as easy as ordering online. It may not be a bad idea to do a tuned intake with the tune that way you have a little more power and a tune that you don't have to revise down the road if you decide to do the intake later on.

-Justin | RR Sales

​​​​​​https://www.rr-racing.com/RR-Racing-...isfitk0003.htm

Ab175

Reviving this thread. For those who are blending to e30, what are your long term fuel trims?

Gohanburne

I think blending for 3 years has finally compromised my fuel pump. No indication of it failing, just threw a P0087 (low fuel pressure) out of nowhere. Removed the relay, put it back int, pressures went back to normal, no issues. The following day, made a 1hr trip without issues. As soon as I went to leave, same thing, P0087. Replacing the fuel pump with an AEM 50-1220 but figured I should let others know in case E85 is what caused the failure. I only put 4 gals in and mix the rest with 93.

caymandive

iTrader: (2)

One of the reasons I stopped mixing e85 awhile ago. Was afraid of causing problems with the fuel system. Been using Boostane Professional Octane Booster in my fuel instead and couldn't be happier. I mix between 2 and 3 ounces per fill up (to achieve 96 octane), so one bottle (32oz) goes a long way. Car has been running great on it and my KCLV levels are higher and my fuel economy has improved over mixing e85. RR-Racing sells the product but you can also get it on Amazon.

semnosNSX

stupid question- Boostane comes in a large 32oz can. How do you accurately measure out 2-3 oz and pour that into your tank while at the gas station filling up?

caymandive

iTrader: (2)

I keep the can along with a measuring cup a funnel and disposable gloves in a sealed plastic bag in the trunk. The stuff smells horrible, which is why i keep it sealed in a bag and I'm not about to let the stuff touch my skin hence the gloves.

semnosNSX

Gotcha! Thanks for the info! I’ll give it a try!

flowrider

iTrader: (9)

I've been using Lucas Octane Booster for over three years now. With the crap gas we get in Arizona it's well worth it. KCLV went from 19 to 23.

Lou

iH8RICERZ

iTrader: (3)

How many oz of Lucas Octane Booster are you using per fill up?

caymandive

iTrader: (2)

Yeah I see the exact same. KCLV goes from 19 to 23.

flowrider

iTrader: (9)

The full 15 oz bottle.

Lou

ChpEng

iTrader: (1)

Last weekend, I watched an east coast PCA meeting video where Lake Speed Jr mentioned that nationwide DOE/EPA waivers have been issued for summer blend gasoline. These waivers allow refiners to exceed the E10 requirement and use (up to) a 15 percent ethanol blend. I checked, and he is correct, nationwide waivers have been issued for the past two summers (2022-2023) and again this summer (2024).

Just prior to Lake's discussion point, Charles Navarro recommended using a fuel additive with every tank for older ("pre-Boxster") Porsches.

Bringing this up here for awareness. MY11 ISF fuel cap specifically states that fuel should not exceed E10. The waivers means we in the US are likely getting E15 and have been the past two summers.

Fuel Waivers | US EPA

Gohanburne

Just an update...the fuel pump was faulty. I also had installed it incorrectly and it was sitting on the bottom of the carrier not picking up fuel. I had to use the OEM strainer to fit the carrier. It starts and drives great...but when I reach about 5,000rpm on a pull it will putter. No CEL, but there is definitely something wrong at 5K rpm. It could be the gas though. I'm going to fill up with only 93 the next fill up and disconnect the battery to start from scratch and see if that fixes whatever is going on. My spark plugs are basically brand new so I didn't think it was them.

Edit: I replaced the OEM low pressure fuel pump with the AEM 50-1220.