Pittsburgh Crew < You
Member
Joined: 10-22-06
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From: Elizabeth/Mckeesport, PA
hey guys justwanted to say hi havent been on here for a while and i moved to orlando im going to UTI so hows thinks goin back in the berg i cant wait to get back there i hate it here man to much city for me im a country boy haha
Senior Member
Joined: 05-19-06
Posts: 6,982
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From: Beaver, PA (outside Pittsburgh)
LAWL...
OK I have the dumbest question alive... I am gonna buy a mechanical boost gauge, an Autometer ES gauge to match my Interceptor and DB Wideband gauge...
Should I get a 20psi or 30psi gauge... I'm probably sitting at about 17.5-18psi with what I have now, but I was thinking for the future, I don't want to be maxing out the 20psi gauge... And I may get ballsy and drop to a 2.6" or soo at some point...
Would the 30psi gauge be any less accurate or anything? Any other cons such as not being able to read as easily as it is more cramped?
OK I have the dumbest question alive... I am gonna buy a mechanical boost gauge, an Autometer ES gauge to match my Interceptor and DB Wideband gauge...
Should I get a 20psi or 30psi gauge... I'm probably sitting at about 17.5-18psi with what I have now, but I was thinking for the future, I don't want to be maxing out the 20psi gauge... And I may get ballsy and drop to a 2.6" or soo at some point...
Would the 30psi gauge be any less accurate or anything? Any other cons such as not being able to read as easily as it is more cramped?
New Member
Joined: 02-05-08
Posts: 98
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From: PA
Close guess. Last name is actually Kowalsky with the y not i. In Ambrige there are both spellings. And I don't have a Challenger, that I know of??
Al, can you please explain the way to do the breather properly~! I tried to PM but it said you did not accept them...
https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/valve-cover-breather-pcv-hose-removal-141840/
https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/valve-cover-breather-pcv-hose-removal-141840/
Senior Member
Joined: 06-08-05
Posts: 18,529
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From: Pittsburgh
x3 on ASAP, wouldn't recommend them at all.
The only thing I can see that might throw things off on the dyno is the weight of the car is WAY off. They put in 3200lbs for the weight of the car when it's likely closer to 2800. That will affect your numbers. Did he input the gear ratios and are you sure he put the right ones in?
All dyno numbers are subject to variation, but if you want a closer-to-accurate number, find another shop with a dynojet.
The only thing I can see that might throw things off on the dyno is the weight of the car is WAY off. They put in 3200lbs for the weight of the car when it's likely closer to 2800. That will affect your numbers. Did he input the gear ratios and are you sure he put the right ones in?
All dyno numbers are subject to variation, but if you want a closer-to-accurate number, find another shop with a dynojet.
New Member
Joined: 02-05-08
Posts: 98
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From: PA
x3 on ASAP, wouldn't recommend them at all.
The only thing I can see that might throw things off on the dyno is the weight of the car is WAY off. They put in 3200lbs for the weight of the car when it's likely closer to 2800. That will affect your numbers. Did he input the gear ratios and are you sure he put the right ones in?
All dyno numbers are subject to variation, but if you want a closer-to-accurate number, find another shop with a dynojet.
The only thing I can see that might throw things off on the dyno is the weight of the car is WAY off. They put in 3200lbs for the weight of the car when it's likely closer to 2800. That will affect your numbers. Did he input the gear ratios and are you sure he put the right ones in?
All dyno numbers are subject to variation, but if you want a closer-to-accurate number, find another shop with a dynojet.
I can see the weight being off. and changing the numbers some. I wouldn't think it would change it 20hp or more, but again. I'm new to this. As far as gear ratio's. I'm not sure what he changed. Other then synch the dyno and car at 4K rmps in 4th, i dont' know. Each reading was in 4th. I"ll look at hitting a dynojet sometime in Dec for another session.
Senior Member
Joined: 06-08-05
Posts: 18,529
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From: Pittsburgh
I can see the weight being off. and changing the numbers some. I wouldn't think it would change it 20hp or more, but again. I'm new to this. As far as gear ratio's. I'm not sure what he changed. Other then synch the dyno and car at 4K rmps in 4th, i dont' know. Each reading was in 4th. I"ll look at hitting a dynojet sometime in Dec for another session.
New Member
Joined: 02-05-08
Posts: 98
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From: PA
Here's a question. What gear would be the closest to 1:1 on the 2.2's. Obviously i dyno'd in 4th. If 4th is isn't close to 1:1 how would that affect the readings? up or down. Just curious. Also what gear would be the best to run in
Senior Member
Joined: 03-03-06
Posts: 4,958
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From: Pittsburgh, PA
The gear won't affect the readings at all on a manual. Thats only an issue on an automatic trans.
Senior Member
Joined: 03-03-06
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From: Pittsburgh, PA
Only for tuning. Its plugged in there to load the dyno up slower and steeper for a heavier vehicle. The output numbers still stay the same though.
The only numbers you can play with are correction factors.
The only numbers you can play with are correction factors.
Senior Member
Joined: 06-08-05
Posts: 18,529
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From: Pittsburgh
Ahhhhh. I just remember the State College crew making a big deal with a shop that used to be up there majorly fudging up some numbers and getting a dissertation on how to manipulate a Mustang Dyno. Weight was in there somewhere. I just remember from what Steve said about it that Mustangs are about the easiest dyno out there to get false numbers out of.
Senior Member
Joined: 03-03-06
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From: Pittsburgh, PA
Ahhhhh. I just remember the State College crew making a big deal with a shop that used to be up there majorly fudging up some numbers and getting a dissertation on how to manipulate a Mustang Dyno. Weight was in there somewhere. I just remember from what Steve said about it that Mustangs are about the easiest dyno out there to get false numbers out of.
The vehicle weight is used to simulate the cars own weight in order to load it to simulate real world conditions to achieve an accurate tune. Even if the weight is changed, the force of 300whp in a 2000lb car will spin the rollers just as fast as 300whp in a 5000lb car.
Thread Starter
Senior Member
Joined: 02-21-06
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From: Pittsburgh, PA
QFT. Learn physics people.
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Joined: 02-05-08
Posts: 98
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From: PA
Mustangs will allow raw correction factors to be placed in there to take the raw power number and multiply it by a percentage. Dynojets only allow the standard correction factors such as STD, SAE, DIN, EEC and so on.
The vehicle weight is used to simulate the cars own weight in order to load it to simulate real world conditions to achieve an accurate tune. Even if the weight is changed, the force of 300whp in a 2000lb car will spin the rollers just as fast as 300whp in a 5000lb car.
The vehicle weight is used to simulate the cars own weight in order to load it to simulate real world conditions to achieve an accurate tune. Even if the weight is changed, the force of 300whp in a 2000lb car will spin the rollers just as fast as 300whp in a 5000lb car.
This make me feel much better about my numbers. So it seems if anything gave me more #'s then i'm actually pulling it's the correction factors.
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Joined: 04-15-07
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From: Butler, PA
Every once in a great while there's a group that will get a dyno day together, but it's usually pretty far away from Ambridge. Although the Moon/Robinson crew goes, so it's not too bad. I've gotta start getting used to those drives too, I'm not in "middle of everything" territory anymore as of next month.
Senior Member
Joined: 03-03-06
Posts: 4,958
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From: Pittsburgh, PA
Correction factors bump the numbers around to achieve a "what if" situation on an average day. Each factor uses its own conditions but they are all near 0 DA/low humidity and ~65 degrees temperature conditions. The further the weather and altitude deviates from those conditions the more of a correction will be applied.