[geeks] Re: Need an opinion

[alex j avriette]

> That depends on the engine.  The Cummins 24v 5.9l can net a 100ft-lb
> with simply remapping fuel delivery.  But I think I may have gone
> through that before, possibly to the point of making everyone on-list
> sick...

One of two things is happening here. Either you're not reading my posts, 
or you don't know engines very well. Either seems equally plausible.

I said:

>> until there is more air and more turbulence to match that fuel, and 
>> less resistance to evacuate it, you are going to make small gains in 
>> power. Oh, this does not of course apply to forced induction vehicles.

Note on the side of your average Dodge Cummins truck it says "Dodge 
Cummins Turbo Diesel." A turbocharger is a form of forced induction. I 
actually wrote the turbochargers FAQ if you'd like me to explain how it 
works.

I am not debating that software can increase the power of forced 
induction vehicles.

> True, but it does change effective torque - the power put to the

No, it does not. A turbocharger (or supercharger) also does not increase 
the compression ratio of an engine. These are common myths among car 
buffs.

> can have a massive effect on accelleration.  So, you're right - but only
> halfway - I think...

I'm pretty certain that I am 100% right here, and on all counts in this 
thread (except forgetting the sway bars).

> It's doubtful that the speedo was off so much that the error was that
> great.  Even at 10%, which would be a huge error, the actual speed would

I replaced my 3.545 differential with a 3.7 diff out of a 300ZX Turbo. I 
replaced my tires with 225/60ZR15 tires, up from the 205/50 stock tires 
on the car. This netted me an 18% speedometer error. Both of these we 
have discussed on the list as possible modifications for your "super 
police interceptor" thingies.

> have been around 145 on the low end which is still impressive.  If there

I'm a lot closer to believing that a police crown vic can do 145 than 
160.

> I've seen stranger things.  In fact, I was once stopped in my Ford
> Taurus (160hp) doing 135, with the only mod being a slight fuel remap
> and the removal of the speed limiter.  I have a copy of the ticket
> around here somewhere in a box.

That's also not so hard to believe.

alex