My Billet 62 low boost dyno results....
04-01-09, 04:22 AM
#16
Cherplex, I'm confused. How are you out of fuel? I remember tuning my car on stock injectors and AEM awhile back, and 540whp was 95% duty at 19psi on a 67mm turbo & pump gas. You shouldn't be out of fuel at 16psi on 62mm turbo. I've tuned a bunch of cars with similar setups and was able to make at least 500whp on stock fuel/stock injectors on pump gas. Something I'm missing in your setup perhaps?
04-01-09, 07:10 AM
#17
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It still seems quite a bit off for stock fuel. I would make sure that you're getting good, consistent, voltage from your fuel pump, as you seem to be about 60+whp low. Was this on a Dynojet? Who was the tuner? Just curious...
04-01-09, 07:37 AM
#19
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Yeah, you need to be WOT and watch the voltage output on the pump. If it starts to drop, then there's your problem. Did you bypass the fuel pump ecu? Oh, and what about the fuel pulsation dampener? Is that bypassed as well? All of these will limit you severely.
04-01-09, 11:14 AM
#21
I'd like to know more about the pulsation dampener. . .
i thought that was a 2jz thing, but want to make sure I don't have one.
If there's one of the SC300, it's part of the fuel lines themselves, correct? and please say they are on the feed line and not the return. . .
i thought that was a 2jz thing, but want to make sure I don't have one.
If there's one of the SC300, it's part of the fuel lines themselves, correct? and please say they are on the feed line and not the return. . .
04-01-09, 12:23 PM
#22
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Well, he's running a USDM GTE motor, so he would have one in there. Some people have found it to free up some fuel, while some people say it didn't matter. Either way, 16psi and 430whp on a 62mm turbo is just not right. That car shouldn't be out of fuel with it being AEM equipped. I ran a 67mm turbo with AEM, on stock fuel, all the way to 540whp on pump gas. I think he might be seeing a voltage drop on his pump as pressure increases, so a fuel pump rewire may be in order. We'll see though.
04-04-09, 04:45 PM
#24
Lexus Fanatic
USDM GTE motor
Soarer R154
Precision 6262 Billet, .68 a/r
Stock Injectors(550cc) with single Walbro.
Precision 850hp FMIC
3" DP/MP/Exhaust
AEM
Car made 433rwhp@16psi at 95% duty cycle on pump gas. Torque was close to 400 I think, I'm waiting on graph from ISP. I was hoping to push it to 500rwhp but was out of fuel. I'm ok with the results for now, my goal was only 500rwhp for now. Will focus my attention on the interior etc. Car pulls very smooth. I will do fuel upgrades soon so I can turn up boost some more so I can play around with a certain other white SC in the area lol.
Soarer R154
Precision 6262 Billet, .68 a/r
Stock Injectors(550cc) with single Walbro.
Precision 850hp FMIC
3" DP/MP/Exhaust
AEM
Car made 433rwhp@16psi at 95% duty cycle on pump gas. Torque was close to 400 I think, I'm waiting on graph from ISP. I was hoping to push it to 500rwhp but was out of fuel. I'm ok with the results for now, my goal was only 500rwhp for now. Will focus my attention on the interior etc. Car pulls very smooth. I will do fuel upgrades soon so I can turn up boost some more so I can play around with a certain other white SC in the area lol.
good luck
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