[s-cars] Re: Living at altitude - Apexi and turbos

[Kirby Smith]

Notwithstandig Scott's vast experience with boost controller removals,
deserved and/or otherwise, I will repeat myself with these facts:  Given
that my A'pexi is operated at the same level of boost limit as the
Hoppen Stage 1 ECU chip with which it is operating, 1.3 kg/cm^2 (except
that in 1st gear I limit the boost to stock, 1.1 kg/cm^2), and given
that the Audi WGFV is left electrically connected to the ECU, but
pneumatically removed from the WG loop, and given that the A'pexi WGFV
returns air to the turbo inlet as the stock WGFV does, I pull no codes.
I get snappy response.  I hear no detonation (and as a Corvair owner,
I'm particularly sensitive to such noises).  I do use Sunoco 94 as a
safeguard, and I live near sea level.  Those running controllers without
high octane available, or operating at other altitudes, or using other
chips and turbos may be candidates for Dr. Scott's miracle elixer.

kirby



QSHIPQ at aol.com wrote:
>
> A couple of thoughts for you flyboyz:
> RE:  Boost controllers.  Bob P put up the main reason aftermarket boost
> controllers aren't even close to the best boost controller in an S car -
> Motronic.  Motronic has 160 variables in the boost profile.  ALL aftermarket
> boost controllers have less, usually ten fold less.  The other thing one
> might find on a trip to the lowlands, is that whatever boost controller
> function you might ahve enjoyed at altitude, sucks wind at sea level.  That
> would include several CO boyz (names withheld to protect the guilty - you
> know who you are).  I routinely disconnect them in Chicago to get the car to
> run right.  I'm also quite fascinated that any piggybacked boost controller
> can work on any S car without throwing a bunch of codes.  I registered no
> less than 6 codes on a more recent debug.
>
> WRT turbos, IC and "big".   To date the highest recorded dyno number I've
> seen stateside is 418 rwhp (sans correction).  Another given, is that the RS2
> MAF will suck it's innerds (IOW:  it breaks) at sustained levels of 440hp.
> Soooo, I really wonder how much all these Hapersized - tm goods are in terms
> of cost vs benefit.
>
> Hap have you put the beast on a dyno yet?
>
> living dense in chicago
>
> SJ
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