How much boost am i able to run?
the Cobb accessport is matched to their stages, if your planning on going your own path, you'll need a custom tune. Not sure if there is custom tuning on the accessport yet, but you should ask them before committing to it.
I think the jury is still out on its actual value other than its a stand alone plug and play reflashing device.
I think the jury is still out on its actual value other than its a stand alone plug and play reflashing device.
Thread Starter
Evolving Member
Joined: Nov 2007
Posts: 303
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From: Orcutt/Santa Maria CA
ok well right now i have 750 injectors, a 255, catback, hks 264/272, intercooler piping and bov, and intake...im getting ready to buy a turbo outlet, dp, test pipe and i want the fp green but i dont know what to do about tuning it... =/
^ You guys need to keep up with current debates.
From David Buschur "Daniel's car (my brother) with the stock turbo has low timing to get by with 30+ on pump. His car is probably down to 1-2 degrees but we are talking about a BONE STOCK turbo on 93 at over 30 psi on a daily basis for the last year."
From David Buschur "Daniel's car (my brother) with the stock turbo has low timing to get by with 30+ on pump. His car is probably down to 1-2 degrees but we are talking about a BONE STOCK turbo on 93 at over 30 psi on a daily basis for the last year."
780's, fuel pump and a good tune at the very least and if you want to run above 21-22psi you should look into getting headstuds, its good insurance. , you will need other supporting mods like a better front mount/piping, a better bov/dv, and if you can afford to do it, some headwork like, cams, valve springs, to get the full potential out of the green. IMO its not worth bolting a green on with just the basic bolt on's like a TBE and intake. the tuner is the most important part.
Evolved Member
Joined: May 2004
Posts: 3,783
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From: Diamond Bar, California
I realize this, I was just providing evidence that there are current debates going on about the stock turbo (or any turbo), pump gas, and how much boost you can run efficiently. It seems that in Europe, they run a lot more boost on the stock turbo efficiently than we do in the States. I guess in Europe access to race fuel or higher octane gasoline is very limited and many tuners there are forced to push the envelope when it comes to pump gas. I thought the OP wanted to know "How much boost am I able to run?" (on stock turbo). So yes it does take the right combination of parts, and yes it does take the right tuner who has the knowledge and williness to want to push the enevelope, but I believe that is possible to run even more boost and gain even more power out of the stock turbo/pump gas.
Evolved Member
Joined: May 2004
Posts: 3,783
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From: Diamond Bar, California
So basically this is what I want to know? Let's say we had a Buschur Stage 4 stock turbo EVO IX (including Cosworth EVO IX Cams) that on a dynojet puts down 370whp@24-25psi on 93 octane pump gas. Now are you guys saying that there is no possible way to get even more power out of that? No way to run even more boost on the stock turbo with straight pump gas efficiently? No other combination of parts or engine build that can allow for even more boost on straight pump gas? Then how come they are able to do it in Europe? Or could it be in the states since we have such easy access to higher octane fuels we so quickly jump to using those fuels instead of pushing the envelope even further on pump gas?
Or in other words, if my car had all the right parts and a tuner like David Buschur working his magic, why couldn't my stock turbo EVO IX run 28-29psi daily on 93 octane pump gas efficiently and make more power? Is there true evidence to suggest otherwise?
I just would like things explained better.
Or in other words, if my car had all the right parts and a tuner like David Buschur working his magic, why couldn't my stock turbo EVO IX run 28-29psi daily on 93 octane pump gas efficiently and make more power? Is there true evidence to suggest otherwise?
I just would like things explained better.
Last edited by 3000ways; Nov 15, 2007 at 08:31 AM.
running that kind of boost outa the stock turbo is pointless. To run that kind of boost you need a lot of fuel and real low timing, less timing, less V.E. And with less ve your egt's go up... Why not run less boost with more timing and make the same, if not more power? That way if say, you get a bad tank of gas and the moto starts knocking, it can pull out enough timing to save itself and not have 29psi stressing the motor. Of course i think it takes mpre talent to tune this way... Its easy to dump fuel pull some timing out and crank boost, but i think its less responcive. Not to mention again the stock turbo is way out of its range at that boost level
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Joined: Nov 2006
Posts: 1,296
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From: wexford,pa
we are talking about 2 things here,
how much is safe for turbo, and how much is safe for the engine
just look at the compressor map of your mitsu turbo. just be in there and your ok. Now as for hot air causing knock, well just add water injection to offset that. But its easy to see what you can run with the turbo without damaging it.
how much is safe for turbo, and how much is safe for the engine
just look at the compressor map of your mitsu turbo. just be in there and your ok. Now as for hot air causing knock, well just add water injection to offset that. But its easy to see what you can run with the turbo without damaging it.
