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Modifying a TB setup with larger injectors???



 
 
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  #1  
Old August 29th 04, 02:54 AM
AndyW
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Default 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



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  #2  
Old August 29th 04, 04:04 AM
Scott M
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Default


"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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  #3  
Old August 29th 04, 04:09 AM
TranSurgeon
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Posts: n/a
Default


"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



  #4  
Old August 29th 04, 02:17 PM
Mad Dog
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Posts: n/a
Default

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
>
>
>



  #5  
Old August 29th 04, 03:54 PM
AndyW
external usenet poster
 
Posts: n/a
Default

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
>
>
>



  #6  
Old August 31st 04, 04:23 AM
Brian
external usenet poster
 
Posts: n/a
Default


"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.


  #7  
Old September 1st 04, 04:07 AM
AndyW
external usenet poster
 
Posts: n/a
Default

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.
>
>



  #8  
Old September 1st 04, 06:34 AM
Brian
external usenet poster
 
Posts: n/a
Default

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.
> >
> >

>
>



  #9  
Old September 2nd 04, 05:00 AM
Brian
external usenet poster
 
Posts: n/a
Default

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.
> > >
> > >

> >
> >

>
>



  #10  
Old September 3rd 04, 01:45 AM
AndyW
external usenet poster
 
Posts: n/a
Default

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.




 




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