15 psi on pump gas with BNRs or Stockers
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15 psi on pump gas with BNRs or Stockers
Let's get a vote from the vets here
what is the risk level associated with running 15 psi on a ported engine, upgraded IC (at least M2 med), free flowing exhaust (straight through style with baffles only) and all fuel upgrades with Power FC (PLENTY of fuel, high 10s to low 11s AFR)
I've been told anything above 14 psi and you are rolling the dice with 93 octane pump gas...opinions/experience?
what is the risk level associated with running 15 psi on a ported engine, upgraded IC (at least M2 med), free flowing exhaust (straight through style with baffles only) and all fuel upgrades with Power FC (PLENTY of fuel, high 10s to low 11s AFR)
I've been told anything above 14 psi and you are rolling the dice with 93 octane pump gas...opinions/experience?
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#8
You should look at the gas pump next time you fill up, all the gas stations I have been to. I have seen a sticker on the pump that states there is a percentage of ethanol in the gas(10%).
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The stock twins won't last long at elevated boost levels, but it can be done. I ran about 16 psi for 2 years before I started seeing excessive shaft play. If you plan to do it for extended periods then go for an upgrade. There comes a point where you are just generating more heat than relevant power. The stock twins are really out of their efficiency range so I don't feel it is a good idea.
#11
The stock twins won't last long at elevated boost levels, but it can be done. I ran about 16 psi for 2 years before I started seeing excessive shaft play. If you plan to do it for extended periods then go for an upgrade. There comes a point where you are just generating more heat than relevant power. The stock twins are really out of their efficiency range so I don't feel it is a good idea.
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#14
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I believe they instituted it about a year or so ago... all gas in the states is now 10% Ethanol. They did it to help it burn cleaner I believe. I know that Va is that way at least.. Though I was pretty sure I saw that it was a country wide thing (maybe the gas stations down south just neglected to put the stickers up..)
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I run 15 to 16 but mix a few gallons of 100 in to up octane a bit. Like 4 gallons per fill up. No problems for 12000 miles. I have changed out a set of turbos at 7000. I am running a used set for $200 right now. They old set had 60k on them previously.
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#17
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I ran my twins at 15 psi for about 15k miles (from 75k to 90k) until they blew.
There are a lot of variables involved......my attitude was, 'let's see how long the little bastards will last'
There are a lot of variables involved......my attitude was, 'let's see how long the little bastards will last'
#20
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detonation, air-fuel ratios, & alcohol/ethanol
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heck if you have a good ignition, 93 octane, a excellent intercooler.. i dont see why you couldnt run safely 15psi on the twins for a while.. as long as you have a good tune.. Id like to try it.
#25
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Stage 2s have upgraded compressor wheels. They spool faster than the 'new' stage 3s (brian's only current offering) because of the smaller stock turbine wheels, vs the larger beefier turbine wheels of the new 3s.