[s-cars] RE: tq

FvAMI at aol.com FvAMI at aol.com
Sat Jan 17 20:09:34 EST 2004


In a message dated 1/10/04 4:52:25 PM Pacific Standard Time, 
mik at info.fundp.ac.be writes:

> Feico,
> 
> 
> My definition of peaky means that boost comes on late IMO, and this is 
> confirmed by the peak torque engine speed.
> 
> Don't worry about increasing boost at part throttle, I know what you mean 
> but it happens to me to do it too. Done it for a customer who wanted 3/4 of 
> full boost available at 1/2 throttle and it works a treat.
> 
> Now the idea is that most of the performance chips out there only contain 
> changes in the WOT areas, which is an option too but not if you also want 
> to improve driveability...
> 
> Oh and BTW, the last lines in the fuel/ignition maps don't always mean WOT. 
> Easy to know when playing with a real-time emulator with a real-time trace 
> function, and also easy not to know when not using this kind of toy, I've 
> BTDT until a few months ago...
> 
> Mihnea
> 
> 

Agreed the last lines are not wide open throttle in less than ideal 
conditions.

When I get round to it I will send a graph of the boost profile maybe you can 
send the graph of the profile that you are using? If my memory serves me well 
the settings are very high in the lower rpm range. It is possible that I have 
a different version of the MTM chip than you. It is much more aggressive than 
the RS2 chips in the lower rpm range across the board ... of course the RS2 
is spec at 302 ft/lbs @ 3000 rpm.

Best regards,
Feico van der Laan


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