Has anyone checked what their MAF voltage or g/s is on a completely stock turbo car? Right now I'm getting 184 g/s max at 11.6 psi. With 9.5-10 psi I get 178 g/s max. This is with a full 3" catless exhaust and stock turbo, no intercooler (no knock yet!).
I never checked when the car was still stock so I'm just wondering where I'm at. Tomorrow I'll bump the boost some more and see what the difference is.
MAF reading for stock?
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What voltage is that?
I've come close to 5v with the stock turbo and 3" TBE.
I've come close to 5v with the stock turbo and 3" TBE.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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- First Gear
- Posts: 64
- Joined: Sun Aug 19, 2007 7:18 pm
- Location: Vancouver, BC
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- First Gear
- Posts: 64
- Joined: Sun Aug 19, 2007 7:18 pm
- Location: Vancouver, BC
I should correct myself, the 184 g/s was at 10.5psi.
Ok, here's the conversion.
Now at 13psi I'm over the limit already, going to check for knock next time I drive it. Boost seems kinda spiky, need to check for leaks.
Ok, here's the conversion.
Code: Select all
Volts g/s
5.00 193.8
4.92 186.6
4.84 179.2
4.77 172.2
4.69 164.8
4.61 157.8
4.53 149.9
4.45 143.4
Boost isn't necessarily a measure of the mass flow rate of air through the engine.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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- First Gear
- Posts: 64
- Joined: Sun Aug 19, 2007 7:18 pm
- Location: Vancouver, BC
On what turbo? Kinda' like comparing, say a TD04 13T vs a GT3076. Do they both flow the same amount of air at xx.xx/psig (kpa, bar or whatever you want to call it)?TurboBeater wrote:Well, what I'm saying is that is the maximum MAF reading at that boost setting. The MAF sensor is pretty much pegged from 4600 RPM to redline.
Thanks for the info. Aside from the voltages, how did you come up with the g/s data?
1.) '02 WRX-2482cc-TD06H-20G-FMIC (just sold)
2.) '90 Legacy-2.5 turbo, VF39, Haltech E8 in-hand - waiting for the 5mt swap
2.) '90 Legacy-2.5 turbo, VF39, Haltech E8 in-hand - waiting for the 5mt swap
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