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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,733

I experienced 1st hand running no IC with 1.6 bar on my 911. I put the timing down to 15 degrees and hoped for the best. Never heard it ping, but I never stayed in it long.

Boost threshold was silly not having to fill up a big IC. Car was so torquey down low having instant additional airflow when cracking the throttle.

Also, not having the weight of the IC made the car snappier in the initial turn in of the steering wheel. Far less pendulum effect.

I really wanted to leave it off and run meth.

Just wasn't convinced meth could keep intake temps at bay from my research.

Meth works opposite of an IC.

An IC is coldest at first, then elevates over time during boost.

Meth allows hotter temps at 1st, then cools the longer you stay in it.
Old 11-15-2017, 05:37 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
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Porsche 935's Avatar
Join Date: Dec 2013
Location: Spring Hill, Florida
Posts: 407
Some guys run straight meth but i run the water also. I think this also helps with detonation, and twin plug doesn't hurt, as that is what they first tried in planes and later added meth to keep water from freezing at high altitudes. I do have longer gears than most. My first 3 gears are like most stock 4 speeds so my pulls are longer.
3.3 ltr, stock compression, efi, twin turbo - no intercooler.
Old 11-15-2017, 05:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)

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