Modifying a TB setup with larger injectors???
 

Is there a way that a stock throttle body on a 1994 GMC K1500 350 can be
modified with larger injectors? A bit more fuel with a ram air setup and
headers should equate to a bit more snort, right? Any sources for getting
parts of this nature?
Looking for opinions and any advice that might be helpful.

Thanks.
Andy

"AndyW" > wrote in message
...
> Is there a way that a stock throttle body on a 1994 GMC K1500 350 can be
> modified with larger injectors? A bit more fuel with a ram air setup and
> headers should equate to a bit more snort, right? Any sources for getting
> parts of this nature?
> Looking for opinions and any advice that might be helpful.
>
> Thanks.
> Andy

A stock TB injector, and its computer system should be easily capable of
handling the headers and ram air.


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"AndyW" > wrote in message
...
> Is there a way that a stock throttle body on a 1994 GMC K1500 350 can be
> modified with larger injectors? A bit more fuel with a ram air setup and
> headers should equate to a bit more snort, right? Any sources for getting
> parts of this nature?
> Looking for opinions and any advice that might be helpful.

1) you install 'larger injectors'
2) the O2 sensor sees a 'rich' exhaust
3) ECM cuts back IPW (Injector Pulse Width) to return air-fuel ratio to
ideal
4) you're back to Square One

better course is to make sure fuel pressure is up to par, and change fuel
filter regularly

Gary is absolutely correct, tweak the rail pressure first (9-13psi),
then read these articles:

http://chevyhiperformance.com/techarticles/148_0307_tbi

http://www.goingfaster.com/spo/modthel03.html

--
Mad-Dog
'79 Chevy K-10
Slightly modified
http://mad-dog16.tripod.com

--
"TranSurgeon" > wrote in message
news:YNbYc.108947$TI1.75664@attbi_s52...
>
> "AndyW" > wrote in message
> ...
> > Is there a way that a stock throttle body on a 1994 GMC K1500 350 can be
> > modified with larger injectors? A bit more fuel with a ram air setup
and
> > headers should equate to a bit more snort, right? Any sources for
getting
> > parts of this nature?
> > Looking for opinions and any advice that might be helpful.
>
> 1) you install 'larger injectors'
> 2) the O2 sensor sees a 'rich' exhaust
> 3) ECM cuts back IPW (Injector Pulse Width) to return air-fuel ratio to
> ideal
> 4) you're back to Square One
>
> better course is to make sure fuel pressure is up to par, and change fuel
> filter regularly
>
>
>

Thanks to all for the replies and suggestions. I'm looking at the budget to
try out some of this stuff.
Andy

"AndyW" > wrote in message
...
> Is there a way that a stock throttle body on a 1994 GMC K1500 350 can be
> modified with larger injectors? A bit more fuel with a ram air setup and
> headers should equate to a bit more snort, right? Any sources for getting
> parts of this nature?
> Looking for opinions and any advice that might be helpful.
>
> Thanks.
> Andy
>
>
>

"AndyW" > wrote in message
...
> Thanks to all for the replies and suggestions. I'm looking at the budget
to
> try out some of this stuff.
> Andy
>
> "AndyW" > wrote in message
> ...
> > Is there a way that a stock throttle body on a 1994 GMC K1500 350 can be
> > modified with larger injectors? A bit more fuel with a ram air setup
and
> > headers should equate to a bit more snort, right? Any sources for
getting
> > parts of this nature?
> > Looking for opinions and any advice that might be helpful.
> >
> > Thanks.
> > Andy
> >


I've thought for a while about getting one of these to "trick" the computer
into running more rich. Seems a little pricy for what you get though.

Also, I run a MSD adjustable timing module. Its a slick deal that gives you
a knob on the dash, allowing you to adjust the timing on the fly. When you
choose to, you can run premium fuel, bump the timing up a little, and feel
it pull noticably better. Conversely, if you get a tank of bad gas, or are
towing, you retard the timing so it doesn't ping on you.

Later, B.

Brian:

How does this MSD box work/mount? For my vehicle below, what special
modifications would I need? I went to this link and there's two different
types of units. Which would I need?
http://store.wpsracing.com/msdadtimcon.html

Appreciate the education.

Andy



"Brian" > wrote in message
...
>
> "AndyW" > wrote in message
> ...
> > Thanks to all for the replies and suggestions. I'm looking at the
budget
> to try out some of this stuff.
> > Andy
> >
> > "AndyW" > wrote in message
> > ...
> > > Is there a way that a stock throttle body on a 1994 GMC K1500 350 can
be modified with larger injectors? A bit more fuel with a ram air setup
> and headers should equate to a bit more snort, right? Any sources for
getting parts of this nature? Looking for opinions and any advice that might
be helpful.
> > >
> > > Thanks.
> > > Andy
> > >
>
>
> I've thought for a while about getting one of these to "trick" the
computer into running more rich. Seems a little pricy for what you get
though.
>
> Also, I run a MSD adjustable timing module. Its a slick deal that gives
you a knob on the dash, allowing you to adjust the timing on the fly. When
you
> choose to, you can run premium fuel, bump the timing up a little, and feel
it pull noticably better. Conversely, if you get a tank of bad gas, or are
> towing, you retard the timing so it doesn't ping on you.
>
> Later, B.
>
>

Hey Andy,
Without running out to the truck to be sure, I believe it is this one.
http://www.jegs.com/cgi-bin/ncommerc...90&prmenbr=361
#121-8683
I can double check if you like, of just give Jegs a call.
It was easy to install, you tap into a couple wires at the coil, power and
ground the box, and run the wire and knob to the dash.
It is CA smog legal too, or at least was a few years ago.
I'll double check the info if you like, lemme' know.
Brian.


"AndyW" > wrote in message
...
> Brian:
>
> How does this MSD box work/mount? For my vehicle below, what special
> modifications would I need? I went to this link and there's two different
> types of units. Which would I need?
> http://store.wpsracing.com/msdadtimcon.html
>
> Appreciate the education.
>
> Andy
>
>
>
> "Brian" > wrote in message
> ...
> >
> > "AndyW" > wrote in message
> > ...
> > > Thanks to all for the replies and suggestions. I'm looking at the
> budget
> > to try out some of this stuff.
> > > Andy
> > >
> > > "AndyW" > wrote in message
> > > ...
> > > > Is there a way that a stock throttle body on a 1994 GMC K1500 350
can
> be modified with larger injectors? A bit more fuel with a ram air setup
> > and headers should equate to a bit more snort, right? Any sources for
> getting parts of this nature? Looking for opinions and any advice that
might
> be helpful.
> > > >
> > > > Thanks.
> > > > Andy
> > > >
> >
> >
> > I've thought for a while about getting one of these to "trick" the
> computer into running more rich. Seems a little pricy for what you get
> though.
> >
> > Also, I run a MSD adjustable timing module. Its a slick deal that gives
> you a knob on the dash, allowing you to adjust the timing on the fly.
When
> you
> > choose to, you can run premium fuel, bump the timing up a little, and
feel
> it pull noticably better. Conversely, if you get a tank of bad gas, or
are
> > towing, you retard the timing so it doesn't ping on you.
> >
> > Later, B.
> >
> >
>
>

Andy,
I checked under the hood, and yes, it is a MSD 8683.
B.


"Brian" > wrote in message
...
> Hey Andy,
> Without running out to the truck to be sure, I believe it is this one.
>
http://www.jegs.com/cgi-bin/ncommerc...90&prmenbr=361
> #121-8683
> I can double check if you like, of just give Jegs a call.
> It was easy to install, you tap into a couple wires at the coil, power and
> ground the box, and run the wire and knob to the dash.
> It is CA smog legal too, or at least was a few years ago.
> I'll double check the info if you like, lemme' know.
> Brian.
>
>
> "AndyW" > wrote in message
> ...
> > Brian:
> >
> > How does this MSD box work/mount? For my vehicle below, what special
> > modifications would I need? I went to this link and there's two
different
> > types of units. Which would I need?
> > http://store.wpsracing.com/msdadtimcon.html
> >
> > Appreciate the education.
> >
> > Andy
> >
> >
> >
> > "Brian" > wrote in message
> > ...
> > >
> > > "AndyW" > wrote in message
> > > ...
> > > > Thanks to all for the replies and suggestions. I'm looking at the
> > budget
> > > to try out some of this stuff.
> > > > Andy
> > > >
> > > > "AndyW" > wrote in message
> > > > ...
> > > > > Is there a way that a stock throttle body on a 1994 GMC K1500 350
> can
> > be modified with larger injectors? A bit more fuel with a ram air setup
> > > and headers should equate to a bit more snort, right? Any sources for
> > getting parts of this nature? Looking for opinions and any advice that
> might
> > be helpful.
> > > > >
> > > > > Thanks.
> > > > > Andy
> > > > >
> > >
> > >
> > > I've thought for a while about getting one of these to "trick" the
> > computer into running more rich. Seems a little pricy for what you get
> > though.
> > >
> > > Also, I run a MSD adjustable timing module. Its a slick deal that
gives
> > you a knob on the dash, allowing you to adjust the timing on the fly.
> When
> > you
> > > choose to, you can run premium fuel, bump the timing up a little, and
> feel
> > it pull noticably better. Conversely, if you get a tank of bad gas, or
> are
> > > towing, you retard the timing so it doesn't ping on you.
> > >
> > > Later, B.
> > >
> > >
> >
> >
>
>

Brian:
So, from what I read on this module, an MSD 6-Series, SCI, 7-, 8- or
10-Series Ignition Control.is used in conjuction with it, right? Is this
worth the effort and money? The way your post reads, you're just using the
timing module; what kind of results are you getting?
Andy

"Brian" > wrote in message
...
> Andy,
> I checked under the hood, and yes, it is a MSD 8683.
> B.
>
>
> "Brian" > wrote in message
> ...
> > Hey Andy,
> > Without running out to the truck to be sure, I believe it is this one.
> >
>
http://www.jegs.com/cgi-bin/ncommerc...164290&prmenbr
=361
> > #121-8683
> > I can double check if you like, of just give Jegs a call. > > It was
easy to install, you tap into a couple wires at the coil, power and ground
the box, and run the wire and knob to the dash. It is CA smog legal too, or
at least was a few years ago.
> > I'll double check the info if you like, lemme' know.
> > Brian.
> >
> >
> > "AndyW" > wrote in message
> > ...
> > > Brian:
> > >
> > > How does this MSD box work/mount? For my vehicle below, what special
modifications would I need? I went to this link and there's two
> different
> > > types of units. Which would I need?
> > > http://store.wpsracing.com/msdadtimcon.html
> > >
> > > Appreciate the education.
> > >
> > > Andy
> > >
> > >
> > >
> > > "Brian" > wrote in message
> > > ...
> > > >
> > > > "AndyW" > wrote in message
> > > > ...
> > > > > Thanks to all for the replies and suggestions. I'm looking at the
budget to try out some of this stuff.
> > > > > Andy
> > > > >
> > > > > "AndyW" > wrote in message
> > > > > ...
> > > > > > Is there a way that a stock throttle body on a 1994 GMC K1500
350 can be modified with larger injectors? A bit more fuel with a ram air
setup
> > > > and headers should equate to a bit more snort, right? Any sources
for getting parts of this nature? Looking for opinions and any advice that
> > mightbe helpful.
> > > > > > Thanks.
> > > > > > Andy
> > > > > >
> > > > I've thought for a while about getting one of these to "trick" the
computer into running more rich. Seems a little pricy for what you get
> > > though. Also, I run a MSD adjustable timing module. Its a slick deal
that gives you a knob on the dash, allowing you to adjust the timing on the
fly.
> > When you choose to, you can run premium fuel, bump the timing up a
little, and feel it pull noticably better. Conversely, if you get a tank of
bad gas, or
> > are towing, you retard the timing so it doesn't ping on you.
> > > >
> > > > Later, B.