North American Turbocoupe Organization



More boost/less timing OR?
Dedpedal Offline
Member
#1
Which gives better overall power? More boost with less timing to fight off detonation or addind timing and backing off the boost?
And why.
87 Turbo Coupe
Ultimate weight reduction. A 93 Mustang coupe body.
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martin0660 Offline
Posting Freak
#2
Good question! Unfortunately, I dont think there is a straight forward answer besides try them both and see what your set up likes best.

I have seen dyno runs where they were about a wash if you stay in the efficiency range. A lot of this will depend on your turbo / intercooler too. If you are near the end of efficiency, the timing would be better. If you are on an efficiency island, more boost could be the ticket.

I am getting ready to do some boost / timing testing, but I have a Mallory box that can do high speed retard, and proportional boost control, so I can vary the timing based on different situations. Thats back to the combo problem, probably not applicable to you.

Bob Myers


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My 88 Thunderbird TC Pictures, Updated 5-8 with a few drag pics
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Jeff K Offline
Administrator
#3
Just a little to add to what Bob said..... if you are looking for better tip in response and low boost or off boost power, jack up the timing, and lower max boost. If looking for best WOT power, increase boost and reduce timing. But as Bob said, play with both and see what happens.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 23 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 04 Taurus Duratec (wifes car) // 91 Topaz (daughters first car)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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