Street Racing & Kill Stories Basic Technical Questions & Advice

Pullied 03 Cobra vs Stock 00 LS1 Transam WS6

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Old 12-26-2008, 05:16 PM
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Originally Posted by BayAreaSS
I have no idea. You can't run over 17psi on 91 out here from my understanding. The highest I have heard of on pump gas is like 580. So I'm assuming the lower octane is really limiting the performance of the cobras
Torco, meth, or buy 55 gallon drums of 110.

Fortunately for me, I have 110 octane (leaded) at the pump about 2 miles
from my house.
Old 12-28-2008, 02:31 PM
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Originally Posted by highway21
yes they are very strict.... if you mod your car the wrong way you will get state refed... and thats not fun at all... i know people that had 600hp cars, then got state refed... long story short, its not 600hp anymore lol
I've heard about that happening to people. I would be pissed
Originally Posted by unit213
Torco, meth, or buy 55 gallon drums of 110.

Fortunately for me, I have 110 octane (leaded) at the pump about 2 miles
from my house.
That must be nice. The cobras out here would be a lot faster if it was that easy to get 110. I'm glad there is no gas station like that around here
Old 12-28-2008, 03:36 PM
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I had mine pullied for 19lbs and never even had a boost guage. When the guy bought my Cobra, he said it would hit 21lbs at times. It was run on 93 octane all the time FYI.
Old 12-28-2008, 07:28 PM
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Originally Posted by JayplaySS2
I had mine pullied for 19lbs and never even had a boost guage. When the guy bought my Cobra, he said it would hit 21lbs at times. It was run on 93 octane all the time FYI.
Thats awesome!
Old 12-29-2008, 07:28 AM
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Nice run bro. Now start modding and come back stronger..
Old 12-29-2008, 08:27 AM
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Originally Posted by JayplaySS2
I had mine pullied for 19lbs and never even had a boost guage. When the guy bought my Cobra, he said it would hit 21lbs at times. It was run on 93 octane all the time FYI.
Same here...19psi on 93 octane. Here's the kicker...timing was at 21* too!
Old 12-29-2008, 09:37 AM
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Originally Posted by unit213
Same here...19psi on 93 octane. Here's the kicker...timing was at 21* too!

Didn't you bump up the PSI this last go around too?

21psi on 93 octane here
Old 12-29-2008, 10:48 AM
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Originally Posted by corysmach1
Yeah we have a a lot of fun with are cars. So you dont have the Mach anymore? What was your setup and numbers?
NOpe...I haven't for a year man. Nice to see you don't pay attention to me anymore...you can 4get about Friday nights.

P1SC blown. The only dyno run I was able to do was 375@ 5600rpm. It saw 6.5psi at that point. It was easily a 430rwhp car. PHP intake spacer so the power curve was ideal. stock midpipe with SLP LM1s with stock tailpipes. Aside from the Apillar, catback sound, and whistle at idle, you would have thought it was a stock lowered mach.

#8 piston ring fried no thanks to the lame *** that rebuilt the shortblock and 'so called' tuned it. I could have had a built shortblock, retuned with more PSI for $4500, but it was my only car and I have four kids......so.....I dumped it and got something thing that I needed for 5 people and commute to work. I'll get another mach....it'll be a couple of years most likely, but I'll have my blown mach some day again.
Originally Posted by unit213
Same here...19psi on 93 octane. Here's the kicker...timing was at 21* too!
holy ****....21*....and only 93 octane on 19psi? that's insane....and you never had a cooling mod. WTH do you do to your cars man? That's freaking N/A timing right there...well, almost.
Old 12-29-2008, 12:02 PM
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Originally Posted by Sarge_13
Didn't you bump up the PSI this last go around too?

21psi on 93 octane here
Yes, 23psi now on 110 octane. It's got a full time race gas tune.

Originally Posted by ponygt65
holy ****....21*....and only 93 octane on 19psi? that's insane....and you never had a cooling mod. WTH do you do to your cars man? That's freaking N/A timing right there...well, almost.
It's all about the tune.
Old 12-29-2008, 12:49 PM
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Originally Posted by unit213
Yes, 23psi now on 110 octane. It's got a full time race gas tune.



It's all about the tune.
Oh I agree........to a point. Its just that 21* is a few degrees higher than norm on 'pump gas' for that psi. BUT, as long as there's no detonation, that's all that matters.
Old 12-30-2008, 04:31 AM
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Originally Posted by unit213
Torco, meth, or buy 55 gallon drums of 110.

Fortunately for me, I have 110 octane (leaded) at the pump about 2 miles
from my house.
This may be a stupid question, what about the O2 sensors?
Old 12-30-2008, 08:49 AM
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Originally Posted by Newskool Mach
This may be a stupid question, what about the O2 sensors?

At 600-700rwhp, they are expendable

Unit does not use his car as a daily anyway so the chances of burning them is minimal
Old 12-30-2008, 11:25 AM
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Originally Posted by Newskool Mach
This may be a stupid question, what about the O2 sensors?
Originally Posted by JayplaySS2
At 600-700rwhp, they are expendable

Unit does not use his car as a daily anyway so the chances of burning them is minimal
NOt only that, the rear O2s can be turned off via tuner (most tuners anywho) and the fronts are for closed loop. He could have those turned off and running open loop 100% of the time (which I NEVER would suggest, but that's me) or he could have multiple tunes and only install the 'race gas' tune when he has it in the tank. THat 'minimal' amount of time running that higher octane stuff won't do any more damage than what normal driving would given how lean you are until you are in open loop. Closed loop running is generally 14.5 A/F.
Old 12-30-2008, 11:30 AM
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Originally Posted by ponygt65
NOt only that, the rear O2s can be turned off via tuner (most tuners anywho) and the fronts are for closed loop. He could have those turned off and running open loop 100% of the time (which I NEVER would suggest, but that's me) or he could have multiple tunes and only install the 'race gas' tune when he has it in the tank. THat 'minimal' amount of time running that higher octane stuff won't do any more damage than what normal driving would given how lean you are until you are in open loop. Closed loop running is generally 14.5 A/F.
He did say he's on a full time race gas tune
Old 12-30-2008, 11:37 AM
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Originally Posted by Sarge_13
He did say he's on a full time race gas tune
Forgot about that.

Well, the world may never know...tootsie pop.

Seriously though, there's a few things that would make the O2's not a big deal...like the amount of power and fun is worth changing them once every 2 months if needed. LOL
Old 12-30-2008, 11:54 AM
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Originally Posted by ponygt65
Forgot about that.

Well, the world may never know...tootsie pop.

Seriously though, there's a few things that would make the O2's not a big deal...like the amount of power and fun is worth changing them once every 2 months if needed. LOL
Which is why I'm still pump gas...
and I can't find any 110 leaded around here except at the track
Old 12-30-2008, 01:08 PM
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Originally Posted by ponygt65
Forgot about that.

Well, the world may never know...tootsie pop.

Seriously though, there's a few things that would make the O2's not a big deal...like the amount of power and fun is worth changing them once every 2 months if needed. LOL
I have been running that 103 octane Streetblaze from VP when I race. Unleaded and no worries about those O2 sesors.
Old 12-30-2008, 02:21 PM
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Originally Posted by Newskool Mach
I have been running that 103 octane Streetblaze from VP when I race. Unleaded and no worries about those O2 sesors.
That's perfect for you. I think you have the ideal setup for stock short block. Lowered limiter with the stall and gears, high octane and safe tune with that D1 to only be putting out 440.........Your setup is perfect for maximizing the stock short block.

Kudos man...big time.



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