Fuel Octane And Boost
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Joined: Jun 2007
Posts: 935
From: USA
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With the 18g's I only run 1.0 - 1.05 bar on 93 octane. I don't feel the need to run anymore boost with that fuel, and I just don't think it's safe. I know others here feel the same way, as does Todd at Protomotive. The car performs GREAT at 1 bar on pump gas, so I prefer to be as safe as possible with my $20K engine.
There has been more than 1 person who has done damage to their engine running too much boost on pump gas (1.3+ bar).
I will say that when running GOOD fuel, I'm much more liberal with the boost. I turn it up to 1.2 bar with 103 octane and it really screams. I know others here turn it up to 1.3 - 1.4 bar with good fuel and haven't had any problems.
There has been more than 1 person who has done damage to their engine running too much boost on pump gas (1.3+ bar).
I will say that when running GOOD fuel, I'm much more liberal with the boost. I turn it up to 1.2 bar with 103 octane and it really screams. I know others here turn it up to 1.3 - 1.4 bar with good fuel and haven't had any problems.
tim
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Joined: Jul 2008
Posts: 1,751
From: Warwickshire, England
Rep Power: 141
Thanks for the advice Adam
As 100 Ron is the very best available here I guess I should stick to 1 bar
Do you think I'll get any benefit from a Proto intake and IC's when running 18g's at 1bar with this fuel?
As 100 Ron is the very best available here I guess I should stick to 1 bar
Do you think I'll get any benefit from a Proto intake and IC's when running 18g's at 1bar with this fuel?
Registered User
Joined: Jun 2007
Posts: 935
From: USA
Rep Power: 92
lesson learned
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Joined: Sep 2007
Posts: 937
From: Quincy, IL
Rep Power: 70
I'm not familiar with England, but over here race gas is widely available. I thought it was hard to come by as well, but found it pretty easily. I live in a small town, so if I can find it, you may be able to as well.
I think it's a great idea to run the Proto intake and IC's. With the larger diameter Proto intake, you'll be pushing more air at a given boost level, so it will help performance. The IC's are also an advantage, especially in warmer weather. They will keep your ECU from pulling timing when temps rise, which will increase performance as well.
I'm also interested in doing the Proto intake. If you end up doing it, please post your thoughts on it.
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