Do these MAP readings look too low???
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Do these MAP readings look too low??? Do these MAP readings look too low for a WOT run??? I thought as the motor rev'd higher I would show less vacuum, higher MAP, or do I have this backwards 
FYI, I am at approx. 650-850 feet above sea level... Also I get a MAP reading of 95 when the engine is off ignition on.
RPM..MAP (kPa)
2383 94
2462 94
2624 94
2794 94
2918 94
3049 93
3265 93
3392 93
3538 93
3695 93
3940 93
4106 92
4269 92
4449 92
4620 92
4801 92
4985 92
5166 91
5320 90
5461 91
5732 91
5891 91
6021 89
6196 89
6348 91
6515 90
FYI, I am at approx. 650-850 feet above sea level... Also I get a MAP reading of 95 when the engine is off ignition on. RPM..MAP (kPa)
2383 94
2462 94
2624 94
2794 94
2918 94
3049 93
3265 93
3392 93
3538 93
3695 93
3940 93
4106 92
4269 92
4449 92
4620 92
4801 92
4985 92
5166 91
5320 90
5461 91
5732 91
5891 91
6021 89
6196 89
6348 91
6515 90
Last edited by SideStep; Aug 31, 2005 at 09:24 AM.
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Originally Posted by SideStep
I just went and checked the MAP with out the engine running...
It is 95 kPa... so maybe my numbers, above, are not that out of line???
It is 95 kPa... so maybe my numbers, above, are not that out of line???
Thread Starter
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Joined: Mar 2003
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Originally Posted by Black02SS
When I do the same test, I only see 99-100 where I know others see 101-102. Don't feel bad. I have tuned several cars around here from SI to H/C and they all fall in line with mine. Weather and other factors play a roll. Maybe you have a intake restriction of some sort?
I have a Shaner S2 Ported TB, LS6 intake and a SLP lid. Two of the three are the same. That is it. I do not have a MAF as it is replaced with a silicone bellow, but before the bellow with the MAF in place it was about the same within 1kPa.
Aside from elevation, looking at it on a %BARO
basis seems like you have only 3% loss at the
top end. So given the rest of the mods I'd say
the intake tract is staying pretty stout.
basis seems like you have only 3% loss at the
top end. So given the rest of the mods I'd say
the intake tract is staying pretty stout.
Side-step. For a race car, that is a substantial intake loss. For a street car that isn't that bad.
Try some experimenting with intake tract to reduce you pressure loss. A good street setup should be able to get 2-3% pressure loss in the intake. You are currently at about 6.7% loss.
Try some experimenting with intake tract to reduce you pressure loss. A good street setup should be able to get 2-3% pressure loss in the intake. You are currently at about 6.7% loss.
Thread Starter
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Originally Posted by NoGo
Side-step. For a race car, that is a substantial intake loss. For a street car that isn't that bad.
Try some experimenting with intake tract to reduce you pressure loss. A good street setup should be able to get 2-3% pressure loss in the intake. You are currently at about 6.7% loss.
Try some experimenting with intake tract to reduce you pressure loss. A good street setup should be able to get 2-3% pressure loss in the intake. You are currently at about 6.7% loss.
Originally Posted by Black02SS
I have a Shaner S2 Ported TB, LS6 intake and a SLP lid. Two of the three are the same. That is it. I do not have a MAF as it is replaced with a silicone bellow, but before the bellow with the MAF in place it was about the same within 1kPa.
Bill
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Originally Posted by HumpinSS
what kinda shape is your air filter in?
Obviously, you have never seen a Vararam "filter". It is barely a filter at all, more like a square piece of foam... Super good flow, not the best at filtering air. I do clean it monthly though...
Here is a link to it...
http://www.vararam.com/b2tech.html
Originally Posted by Bill Bowling
Where did you get the silicone bellow?
Bill
Bill
www.hightempsilicone.com
Originally Posted by SideStep
That is what I am finding out, the more I read. Hell, what do I do next??? FAST 90/90 setup??? I thought my intake track setup was pretty good???
Or......
You could do like 99% of the people on this board and just buy a bunch of parts and put them on and see if it helps
