93 F150 4.9L 4x4 auto 3.73 ratio

Have done 3" complete Flowmaster
K&N Filter
MDS coil
Hypertech chip
160* thermo
Am looking for ideas about the next most logical upgrade.
I use the RED 1 to haul fire wood and for pulling a 19' litewieght 5th wheel.It's not a Hot Rod but a working truck as well as an entertainment centre, Good acoustics. Thanks.

 

why do you have a 160* t-stat? thats too cold for a fuel injected vehicle. it probably has trouble coming out of closed loop. youd be better off with a 180. and it probably makes more power with it as well.

 

The Hypertech power chip changes the engine management. It's recommended by the manufacteur that the thermo be changed. Not sure of the science of it all but it seems to work. Got a holiday coming up so I can put it to the test but initially my around town milage has increased by 10% and the truck runs real sweet.

 

The lower thermostat allows more advance without pinging. Also Ford truck are known to run a little rich - lowers the combusion temp a little so it doesn't knock. The chip probably leans it out a little and gives it more advance to make more power.

Or I could be totally wrong!

Reggie

 

>The lower thermostat allows more advance without pinging.

Trouble is, It won't allow the engine to make as
much power...

>Also Ford truck are known to run a little rich

Where did you learn that?? As far as I am aware,
the O2 sensor tells the ECU that the mix is rich/lean
and the ECU changes the injector pulse...

> - lowers the
>combusion temp a little so it doesn't knock.

Funny, that what the EGR does, so does adding
more fuel, which the cat converter tries to
burn, which will overheat the cat...

> The chip
>probably leans it out a little and gives it more advance to
>make more power.

No, most chips just advance the timing, which requires
the use of more expensive fuel,

>Or I could be totally wrong!

Yes, you are...

Steve & the Rockette
'63 F100
'68 F100
'72 Capri 2L
'73 Capri 2.6L V6
'73 MG B GT 2.6L V6(Ford)
'98 Contour SVT 2.5L V6 (Mods)
'01 ZX2 (No Mods yet)

 

Always loved a good thought out reply. So what caused the increase in gas mileage after the chip change? An MSD coil won't do that over the OEM ignition. No changes to the intake. Exhaust after the manifold? Maybe...but doubtful. Combination of everything? Probably.

I will quote from the OEM "These low temperture thermostats lower the temperture of the incoming air/fuel mixture and combustion chamber for reduced engine temperture and less detonation. The result is increased power and better performance"

Let see, lower air temp equals a higher density and more oxegen molecules - basic gas law here. With more air entering the cylinder, more power can be produced.

Lowering the combustion chamber temperture does reduce preignition. For some reason, I thought this was well known.

You got the part right about the O2 sensor telling the ECU what mixture is. What the ECU does with it depends upon how it is programmed. Does it run at 14:1 13:1 12:1? All of that is entered into the program.

Do these chip do more than advance the timing? Yes, they also change the fuel curve.

As far as the Ford injection running on the rich side, I did not state that it was overly rich. I read this years ago on the first 460 fuel injected motors. I should have stated that it was rumored - I apologize for that.

Don't come off so arrogant. We are all here to help each other and share information.

Reggie

 

>Always loved a good thought out reply. So what caused the
>increase in gas mileage after the chip change? An MSD coil
>won't do that over the OEM ignition. No changes to the
>intake. Exhaust after the manifold? Maybe...but doubtful.
>Combination of everything? Probably.

Probably, letting the engine breath freely will increase
the fuel milage...Pumping loses are reduced...

>I will quote from the OEM "These low temperture thermostats
>lower the temperture of the incoming air/fuel mixture and
>combustion chamber for reduced engine temperture and less
>detonation. The result is increased power and better
>performance"

160* is too low, 180* at least gets it to a reasonable
operating temp...

>Let see, lower air temp equals a higher density and more
>oxegen molecules - basic gas law here. With more air
>entering the cylinder, more power can be produced.

There is more to it than you think, we are, afterall
talking about a 4.9L I6, putting a header on will
reduce intake temps, putting a K&N on will increase
airflow to the motor, but at a cost(the K&N), my
SVT has seen dyno time, and I could pick up almost
5 HP if I run without an air filter, but I ain't gonna
run a K&N...

>Lowering the combustion chamber temperture does reduce
>preignition. For some reason, I thought this was well known.

and as I said, the EGR reduces the combustion temps...
I thought everyone knew that...

>You got the part right about the O2 sensor telling the ECU
>what mixture is. What the ECU does with it depends upon how
>it is programmed. Does it run at 14:1 13:1 12:1? All of that
>is entered into the program.

>Do these chip do more than advance the timing? Yes, they
>also change the fuel curve.

Thats true, but is it really the best way to make power?
Oh yeah, throw more fuel at it, unless you're running a
blower, stoich is best, I've seen blower motors make more
power at 12:1 that at stoich, weird, huh??

>As far as the Ford injection running on the rich side, I did
>not state that it was overly rich. I read this years ago on
>the first 460 fuel injected motors. I should have stated
>that it was rumored - I apologize for that.

I rarely believe what I read, I like to see it for myself...

>Don't come off so arrogant. We are all here to help each
>other and share information.

Sorry, I didn't think it was "arrogant", snot nosed maybe,
but never arrogant...

Steve & the Rockette
'63 F100
'68 F100
'72 Capri 2L
'73 Capri 2.6L V6
'73 MG B GT 2.6L V6(Ford)
'98 Contour SVT 2.5L V6 (Mods)
'01 ZX2 (No Mods yet)

 

I'll settle for snot nosed!

All I was doing was trying to offer some plausable explaination of why the chip maker wanted 160 degree thermostat. Personally I think that it is too low on a street driven motor.

Personally I have not seen any change when replacing my stock sized flat panel filter with K&N. Part of the reason was that K&N filter had less than half of the pleats as the stock paper unit in my application. That would mean the filter media would have to be more than double the efficiency and it's not. I am going to install a 14" x 5" K&N unit on my 390 in my truck.

On older motors - without EGR - removing heat from the combustion chamber does reduce preignition. That's one of the reasons you can run a higher compression ratio with out preignition. Adding a header will lower temps across the board, but the original poster did not mention that.

Again the original intent was to answer why the chip maker recommended a lower thermostat. I don't like running that low on the temp and have never put a chip on any of my vehicles. I thought about doing it to my VW TDI - but it was totaled before I could get around to it. In that case the turbo wastegate was controlled by the ECU so I could run a little more boost. I think a chip on a gas engine would be one of the last things I would do. I would do the other mods first - free flowing exhaust system would be one of the first.

Reggie

1969 Ford F100

 

Forgot to say aluminum heads will allow higher compression ratios with out preignition!

I think the memory left right after the hair!!!!

Reggie

I'll settle for snot nosed!
>
>All I was doing was trying to offer some plausable
>explaination of why the chip maker wanted 160 degree
>thermostat. Personally I think that it is too low on a
>street driven motor.
>
>Personally I have not seen any change when replacing my
>stock sized flat panel filter with K&N. Part of the reason
>was that K&N filter had less than half of the pleats as the
>stock paper unit in my application. That would mean the
>filter media would have to be more than double the
>efficiency and it's not. I am going to install a 14" x 5"
>K&N unit on my 390 in my truck.
>
>On older motors - without EGR - removing heat from the
>combustion chamber does reduce preignition. That's one of
>the reasons you can run a higher compression ratio with out
>preignition. Adding a header will lower temps across the
>board, but the original poster did not mention that.
>
>Again the original intent was to answer why the chip maker
>recommended a lower thermostat. I don't like running that
>low on the temp and have never put a chip on any of my
>vehicles. I thought about doing it to my VW TDI - but it was
>totaled before I could get around to it. In that case the
>turbo wastegate was controlled by the ECU so I could run a
>little more boost. I think a chip on a gas engine would be
>one of the last things I would do. I would do the other mods
>first - free flowing exhaust system would be one of the
>first.
>
>Reggie
>
>1969 Ford F100

 

Trouble you're having is OTD, or CRS...
That last line was written as humour...
one of those two anyway, we're talking about
a '93, so it has EGR, and we're attemping to
assist the original poster make more power.
But he's probably lost interest at this point,
and yes, you are right, aluminum heads can take
more compression than iron.

Just as an aside, my SVT has made 187HP at the
wheels, without an air filter. It's made 182.5
with the air filter. So it can be said, If you
let it breath, it'll make more power...

Steve & the Rockette
'63 F100
'68 F100
'72 Capri 2L
'73 Capri 2.6L V6
'73 MG B GT 2.6L V6(Ford)
'98 Contour SVT 2.5L V6 (Mods)
'01 ZX2 (No Mods yet)

 

The original poster would like to thank all you kind folk for the informitive responses. I believe the fuel milage increase is due to the exhaust, coil, premium fuel and the K&N, I belieive the chip will only improve power output when it's pulling hard and then there will be no improved milage caused by the chip. I do hope that the other improvements to intake, spark and exhaust will help gas milage over the stock config. Wil post after vacation in may june as to fuel milage and performance during a towing situation in the rocky mountains of B.C. Stay tuned for futher developments....