Bolted up a 20g-9.....untuned !!
Apr 2, 2006, 05:39 PM
#16
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Originally Posted by EFIxMR
nice job! when your car is tuned with more boost on pump the gains will be even better. my car runs 23 psi boost spike which tapers to 18 psi on 91 octane on the 05' turbo. once you get your car tuned try 1-2 psi more on
pump.
pump.
Thanks EFIxMR,
I'll see after I get tuned how much more I can boost. Then do some runs and report back.
Wow...23 psi on 91 ?
.
Apr 2, 2006, 05:42 PM
#18
Ok take this for critism then.
He has the stock turbo in it, he sees 11.3 AFR
He puts a new turbo in it that should flow more air, and has the same AFR
The turbo isn't pushing more air, case closed. If the turbo had the ability to make power, the AFR would have gone lean.
He has the stock turbo in it, he sees 11.3 AFR
He puts a new turbo in it that should flow more air, and has the same AFR
The turbo isn't pushing more air, case closed. If the turbo had the ability to make power, the AFR would have gone lean.
Apr 2, 2006, 05:46 PM
#19
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Originally Posted by 4TUN8
Uh...am I the only one that sees this?
He trapped 111.0
He added a fmic and a 20g9 turbo and picked up 2mph.
That's a lot of money for 2mph
He trapped 111.0
He added a fmic and a 20g9 turbo and picked up 2mph.
That's a lot of money for 2mph
I am not tuned for these 2 mods. Hopefully after I get tuned I will have some substantial gains.
I know it's alot of money but you only live once. And the Wife said it was o.k.
Apr 2, 2006, 05:55 PM
#20
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Originally Posted by 4TUN8
Ok take this for critism then.
He has the stock turbo in it, he sees 11.3 AFR
He puts a new turbo in it that should flow more air, and has the same AFR
The turbo isn't pushing more air, case closed. If the turbo had the ability to make power, the AFR would have gone lean.
He has the stock turbo in it, he sees 11.3 AFR
He puts a new turbo in it that should flow more air, and has the same AFR
The turbo isn't pushing more air, case closed. If the turbo had the ability to make power, the AFR would have gone lean.
Al's tune was 11.0-11.1 afr not 11.3
I don't think I'm pushing more air because I haven't raised the boost. I'm probably pushing the air efficiently though compared the the stock 03.
Pushing more air won't neccecarilly lean afr's out if the ECU can still compensate .
I am making a little more power hence the higher trap speed at the same boost level.
Apr 2, 2006, 06:03 PM
#21
Originally Posted by Warrtalon
The key point in your response was that Ted B went from a TME to a 20g-9-6. This guy went from a stock 03 turbo to a 20g-9-6. He didn't go from a TME...the TME is like an 05 (10.5 hotside) but with the Ti/Al internals. I think Nad would have seen the same gains, if not more, from installing a TME without the FMIC upgrade.
I ran a 12.0 @ 117 with the 6-blade 20G. This is misleading, because it did no better peak power-wise than my TME, but required more boost to get there. Of course someone upgrading from a stock EVO 8 turbo wouldn't realize that he would get about the same peak power had he just added a $250 hotside to his stock turbo. Those are my findings, and where the difference is unmistakably obvious is on the street, not at the drags.
The fault I quickly found with the 6-blade 20G is in that I saw it run out of efficiency faster than does a plain EVO8 16G w/10.5. This is not as much an issue at the moderate boost levels we get from 5000rpm on up (which is what we see on the drag strip). Below 5000rpm however, it sucked as compared to what I typically see from a plain old 16G with 10.5 hotside. The BIG torque peak that one gets from running up the boost on a 16G in the midrange doesn't happen (down 50 ft/lbs in my case), and raising it made no difference. But again, unless one already had an opportunity to drive a car running 25 psi on race fuel or meth and making BIG torque in the midrange, he'd never know what's missing. Oh yeah, I lost 300rpm of spool time as compared to my TME.
I just received a PM from another person running a 6-blade 20G. He says: "I took off the 20g a put back in the 16g and the car drives alot better. It is a big difference when the boost comes on and the transient response." He's upgrading to the 5-blade wheel. I urged him to post his experiences as soon as he does.
This is consistent with my findings, which is why I urge extreme caution if consdering a 6-blade 20G. YMMV, but I highly doubt it. Caveat emptor
Last edited by Ted B; Apr 2, 2006 at 06:25 PM.
Apr 2, 2006, 06:23 PM
#22
Originally Posted by 4TUN8
The turbo isn't pushing more air, case closed. If the turbo had the ability to make power, the AFR would have gone lean.
Also, more boost doesn't necessarily mean that the car runs leaner as you implied above. It may be that your car is tuned that way, but it really comes down to the way the car has been tuned. Some tunes intentionally lean out with more boost, as seen by the MAP sensor, so that they suit both lower boost pump gas (rich AFR) and higher boost race gas (lean AFR). Other tunes keep the same AFR as you add boost, or even go richer. It depends on the tuning approach.
Apr 2, 2006, 06:37 PM
#24
Originally Posted by EVO8LTW
The point of a MAF is to meter fuel based on air flow, so more air doesn't automatically make the car go leaner.
Also, more boost doesn't necessarily mean that the car runs leaner as you implied above.
It may be that your car is tuned that way, but it really comes down to the way the car has been tuned. Some tunes intentionally lean out with more boost, as seen by the MAP sensor
,
so that they suit both lower boost pump gas (rich AFR) and higher boost race gas (lean AFR). Other tunes keep the same AFR as you add boost, or even go richer. It depends on the tuning approach.
Apr 2, 2006, 06:40 PM
#25
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Originally Posted by sho 'um
So you can make the 20g work without the install kit? Hum, that would save some money. Are the outlets the same diameter?
Everything bolted up fine with few bending on the lines to line up.
Cost me $ 0 . Extra 30 min. on the install.
.
Apr 2, 2006, 06:41 PM
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Originally Posted by EVO8LTW
The point of a MAF is to meter fuel based on air flow, so more air doesn't automatically make the car go leaner.
Also, more boost doesn't necessarily mean that the car runs leaner as you implied above. It may be that your car is tuned that way, but it really comes down to the way the car has been tuned. Some tunes intentionally lean out with more boost, as seen by the MAP sensor, so that they suit both lower boost pump gas (rich AFR) and higher boost race gas (lean AFR). Other tunes keep the same AFR as you add boost, or even go richer. It depends on the tuning approach.
Also, more boost doesn't necessarily mean that the car runs leaner as you implied above. It may be that your car is tuned that way, but it really comes down to the way the car has been tuned. Some tunes intentionally lean out with more boost, as seen by the MAP sensor, so that they suit both lower boost pump gas (rich AFR) and higher boost race gas (lean AFR). Other tunes keep the same AFR as you add boost, or even go richer. It depends on the tuning approach.
Apr 2, 2006, 07:15 PM
#27
Originally Posted by 4TUN8
I've had my car tuned by TurboTrix and I've tuned it myself using an ECU+ and everything seemed relative. The more boost you threw at the motor, the more the AFR's went lean. If I'm not mistaken the MAF sends it's voltage and the ECU dictates between throttle position, and variables like that. Considering the car has no MAP there is no way for the ecu to see boost levels.
Apr 2, 2006, 07:30 PM
#28
Well, to be clear, the MAF doesn't cut fuel at a certain boost. The airflow max can be reached at lower or higher boost levels depending on mods, the turbo itself, and air density. Some people hit it at 20psi...others at 25psi...others never (like me).
Apr 2, 2006, 07:41 PM
#30
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im not sure if im disappointed in this turbo yet, but i am glad that someone finally bolted this turbo on a evo with bolt on parts and running pump gas. I would really like to see the final dyno for this after its tuned.