Dyno tune ?

Good Morning Gang,
Was wondering how much of an increase in rwhp / rwtq would I see with a
dyno tune. Got an 02 GT with K&N drop in filter, Magnaflow catback,
Accufab plenum with 70MM throttle body. With these mods I'm at 243
rwhp, and 285 rwtq.
Martin
2002GT 5 spd

Martin wrote:
> Good Morning Gang,
> Was wondering how much of an increase in rwhp / rwtq would I see with a
> dyno tune. Got an 02 GT with K&N drop in filter, Magnaflow catback,
> Accufab plenum with 70MM throttle body. With these mods I'm at 243
> rwhp, and 285 rwtq.
> Martin
> 2002GT 5 spd
>
How much you gain is anybody's guess.
1. The factory specs are obtained at near ideal conditions. If you habitually drive
in other conditions - high heat, extreme cold, high altitude - having the engine
tuned to those conditions can gain some power.
2. Your engine may not be performing as designed. Injector pulses may not be timed
right, the advance curve may be off a little. A good dyno tuner should be able to
correct that.
3. The factory tune is extremely conservative. Made for the average driver, in
average conditions, to meet emissions requirements, and to allow the engine to last
forever on cheap pump gas. If you're willing to run premium all the time, there's
lots of power to be had.

--
..boB
1997 HD FXDWG - Turbocharged!
2001 Dodge Dakota QC 5.9/4x4/3.92
1966 Mustang Coupe - Daily Driver
1966 FFR Cobra - Ongoing project

On Sun, 19 Jun 2005 12:45:38 -0600, .boB wrote:

> Martin wrote:
>> Good Morning Gang,
>> Was wondering how much of an increase in rwhp / rwtq would I see with a
>> dyno tune. Got an 02 GT with K&N drop in filter, Magnaflow catback,
>> Accufab plenum with 70MM throttle body. With these mods I'm at 243
>> rwhp, and 285 rwtq.
>> Martin
>> 2002GT 5 spd
>>
> How much you gain is anybody's guess.
> 1. The factory specs are obtained at near ideal conditions. If you habitually drive
> in other conditions - high heat, extreme cold, high altitude - having the engine
> tuned to those conditions can gain some power.
> 2. Your engine may not be performing as designed. Injector pulses may not be timed
> right, the advance curve may be off a little. A good dyno tuner should be able to
> correct that.
> 3. The factory tune is extremely conservative. Made for the average driver, in
> average conditions, to meet emissions requirements, and to allow the engine to last
> forever on cheap pump gas. If you're willing to run premium all the time, there's
> lots of power to be had.

Can you clarify what you mean by that? I *always* run premium, in
everything I drive. So what would I do on an EFI engine to improve
performance?

Thomas

A better chip than standard for a start.

On Fri, 24 Jun 2005 04:54:47 GMT, Thomas Cameron
> wrote:

>On Sun, 19 Jun 2005 12:45:38 -0600, .boB wrote:
>
>> Martin wrote:
>>> Good Morning Gang,
>>> Was wondering how much of an increase in rwhp / rwtq would I see with a
>>> dyno tune. Got an 02 GT with K&N drop in filter, Magnaflow catback,
>>> Accufab plenum with 70MM throttle body. With these mods I'm at 243
>>> rwhp, and 285 rwtq.
>>> Martin
>>> 2002GT 5 spd
>>>
>> How much you gain is anybody's guess.
>> 1. The factory specs are obtained at near ideal conditions. If you habitually drive
>> in other conditions - high heat, extreme cold, high altitude - having the engine
>> tuned to those conditions can gain some power.
>> 2. Your engine may not be performing as designed. Injector pulses may not be timed
>> right, the advance curve may be off a little. A good dyno tuner should be able to
>> correct that.
>> 3. The factory tune is extremely conservative. Made for the average driver, in
>> average conditions, to meet emissions requirements, and to allow the engine to last
>> forever on cheap pump gas. If you're willing to run premium all the time, there's
>> lots of power to be had.
>
>Can you clarify what you mean by that? I *always* run premium, in
>everything I drive. So what would I do on an EFI engine to improve
>performance?
>
>Thomas

Hey! Spikey Likes IT!
1965 Ford Mustang fastback 2+2 A Code 289 C4 Trac-Lok
Vintage Burgundy w/Black Standard Interior
Vintage 40 Wheels 16X8"
w/BF Goodrich Comp T/A Radial 225/50ZR16

EFI engines have knock sensors and the 'puter takes out timing advance
when pre-ignition is happening. So the lower the octane, the less
timing advance you're getting. All else being equal, all three grades
of the same gasoline will burn the same and provide the same amount of
power. But with a computer varying the timing according to the octane,
you'll get a little more power with higher octane.

180 Out

Thomas Cameron wrote:
> On Sun, 19 Jun 2005 12:45:38 -0600, .boB wrote:
>
>
>>Martin wrote:
>>
>>>Good Morning Gang,
>>>Was wondering how much of an increase in rwhp / rwtq would I see with a
>>>dyno tune. Got an 02 GT with K&N drop in filter, Magnaflow catback,
>>>Accufab plenum with 70MM throttle body. With these mods I'm at 243
>>>rwhp, and 285 rwtq.
>>>Martin
>>>2002GT 5 spd
>>>
>>
>> How much you gain is anybody's guess.
>>1. The factory specs are obtained at near ideal conditions. If you habitually drive
>>in other conditions - high heat, extreme cold, high altitude - having the engine
>>tuned to those conditions can gain some power.
>>2. Your engine may not be performing as designed. Injector pulses may not be timed
>>right, the advance curve may be off a little. A good dyno tuner should be able to
>>correct that.
>>3. The factory tune is extremely conservative. Made for the average driver, in
>>average conditions, to meet emissions requirements, and to allow the engine to last
>>forever on cheap pump gas. If you're willing to run premium all the time, there's
>>lots of power to be had.
>
>
> Can you clarify what you mean by that? I *always* run premium, in
> everything I drive. So what would I do on an EFI engine to improve
> performance?
>
> Thomas
You may always run premium, but if the engine is stock, you probably don't need
to. Check the owners manual.
You can get good improvements by increasing the ignition curve, and increasing
the injector pulse. More fuel + more spark = More power. The simple way to do it
is something like a hypertech tuner, which does exactly that. A dyno tune with a
custom chip will test your engine, and alter those two factors for optimal
performance across the power band with the aftermarket parts you've already installed.

--
..boB
1997 HD FXDWG - Turbocharged!
2001 Dodge Dakota QC 5.9/4x4/3.92
1966 Mustang Coupe - Daily Driver
1966 FFR Cobra - Ongoing project

10-12 rwhp if tuned correctly.

Ed

"Thomas Cameron" > wrote in message
news
> On Sun, 19 Jun 2005 12:45:38 -0600, .boB wrote:
>
>> Martin wrote:
>>> Good Morning Gang,
>>> Was wondering how much of an increase in rwhp / rwtq would I see with a
>>> dyno tune. Got an 02 GT with K&N drop in filter, Magnaflow catback,
>>> Accufab plenum with 70MM throttle body. With these mods I'm at 243
>>> rwhp, and 285 rwtq.
>>> Martin
>>> 2002GT 5 spd
>>>
>> How much you gain is anybody's guess.
>> 1. The factory specs are obtained at near ideal conditions. If you
>> habitually drive
>> in other conditions - high heat, extreme cold, high altitude - having the
>> engine
>> tuned to those conditions can gain some power.
>> 2. Your engine may not be performing as designed. Injector pulses may
>> not be timed
>> right, the advance curve may be off a little. A good dyno tuner should
>> be able to
>> correct that.
>> 3. The factory tune is extremely conservative. Made for the average
>> driver, in
>> average conditions, to meet emissions requirements, and to allow the
>> engine to last
>> forever on cheap pump gas. If you're willing to run premium all the
>> time, there's
>> lots of power to be had.
>
> Can you clarify what you mean by that? I *always* run premium, in
> everything I drive. So what would I do on an EFI engine to improve
> performance?
>
> Thomas