NESpeed

Just wondering why the only boost levels I see around are at 10-14psi, and why you dont push alittle more saying you have the fuel to support it?

FormerPorscheGuy

10-14 is the safe limit to the stock twin turbo's. If you want more boost go single.

You can no just "tun up the boost" on these cars.

clayne

For the same reason that you don't use one plastic bag for 2 gallons of milk.

NESpeed

Not to be a *****, but can you explain it? Say you have 2mm or bigger seals and upgraded turbos, with the right supporting mods to work with it, what else stops you?

Mahjik

iTrader: (1)

Upgraded turbos, that's the kicker. Pretty much, all the guys with upgraded turbos are running higher boost. Just take a look in the Single Turbo section:

https://www.rx7club.com/showthread.p...threadid=33502

As for the stock twins, they can be pushed to 17 or so PSI. However, longevity becomes an issue at that point (as well as efficiency).

NESpeed

Well I mean on upgraded Seq.

Boosted!

Rotary motors are very picky!

GoodfellaFD3S

iTrader: (213)

Well, if your turbos are upgraded, then they aren't stock anymore .

I run 17 psi on my upgraded twins on pump gas.

The stock twins compressor efficiency is the limiting factor. After a certain boost level, all you are making is heat. Keep in mind your stock twins are ~10 years old, too. I'd be willing to bet alot of the drag racers making big numbers and fast times are running new/rebuilt twins......

911GT2

And even still, anything beyond 14psi, or even 12 psi, requires a fully tunable ECU with fuel mods, which most people don't have.

felix_is_alive

on the stock ecu there is a little thing called fuel cut .....after 13-14 psi keerrr-kablap and lets go to one rotor ......even if you have the right tunning the stock twins cannot and willnot flow efficiently above 15 psi i believe it stars heating the air .....hot air you know it baby aka detonation aka kaboom hello one rotor