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Frenchrafe
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JUN 11, 11:05 AM
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Blacktree
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JUN 11, 11:47 AM
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That's a nice torque curve! For us Americans, 491 Nm is about 362 ft-lb.
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fishsticks
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JUN 11, 12:07 PM
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Look at that. 3500 RPM range within 10% of peak torque.
Yeah, that thing's a monster exiting a turn...
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Frenchrafe
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JUN 11, 12:11 PM
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Yes, we tuned it to give max torque.
On 1 dyno pull, we got 447HP but it was too lean!
Backed off a bit, and tried to go for a nice linear power curve.
I am pleased with the result 👍👌😀
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"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France!
https://www.youtube.com/cha...1wZvWQlkYxTjivW_0XNg[This message has been edited by Frenchrafe (edited 06-14-2021).]
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Frenchrafe
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JUN 11, 12:16 PM
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And yes, Turbo Slug is unbeatable coming out of a turn !
😜🤘
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"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France!
https://www.youtube.com/cha...1wZvWQlkYxTjivW_0XNg[This message has been edited by Frenchrafe (edited 06-11-2021).]
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Notorio
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JUN 11, 01:01 PM
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What is physically happening at around 6200 rpm that causes HP and TRQ to drop like a rock? Are the valves no longer able to seal?
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Frenchrafe
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JUN 11, 01:14 PM
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| quote | Originally posted by Notorio:
What is physically happening at around 6200 rpm that causes HP and TRQ to drop like a rock? Are the valves no longer able to seal? |
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Probably being over cautious on the dyno.
Anyway, there's a 6500rpm cutout in the tune.
The dyno guy knew this and lifted his foot before. In his experience, he doesn't push an engine to it's absolute limit.
He (and I) wanted max perf and reliability😉------------------
"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France!
https://www.youtube.com/cha...1wZvWQlkYxTjivW_0XNg
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Notorio
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JUN 11, 11:18 PM
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| quote | Originally posted by Frenchrafe:
Probably being over cautious on the dyno.
Anyway, there's a 6500rpm cutout in the tune.
The dyno guy knew this and lifted his foot before. In his experience, he doesn't push an engine to it's absolute limit.
He (and I) wanted max perf and reliability😉
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OK, got it. Just curious how much boost you are running and how that would compare to the boost in the SC version. I guess that will be Apples vs Oranges no matter how you think about the two.
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La fiera
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JUN 12, 12:02 AM
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Frenchrafe
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JUN 12, 12:39 AM
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| quote | Originally posted by Notorio:
OK, got it. Just curious how much boost you are running and how that would compare to the boost in the SC version. I guess that will be Apples vs Oranges no matter how you think about the two. |
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I don't run alot of boost ; between 0.75 and 1 bar. Yesterday, we were just running at wastegate spring pressure. So more in the 0.75bar range (11 psi ?).
It was mighty hot yesterday as well and I saw a 40°C intake temp. My intercooler works better on the track/road than on the dyno! Not enough airflow even with dyno fans.
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