Scan Results........Opinions
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Senior Member
Joined: Jul 1999
Posts: 760
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From: Chillicothe Ohio
Car: 89 RS 355/ 89 IROC Convert
Engine: Hot Cam 355/TPI 305
Transmission: All 700r4's
Scan Results........Opinions
Here is my scan numbers for my run with my Turbo Link.
2250 rpm 4in vac TPS=4.1 o2= 699mv
3425 rpm 5.3 vac TPS=4.14 o2=830mv
4550 rpm 8.1 vac TPS=3.04 o2=800mv
These are the numbers but I think turbo link only picks up at 1.5 seconds so I never got the scan @ 5000rpm. I also have vaccume at wide open throttle (is this right) Please tell me what you think.
Brian Felts
------------------
1989 Camaro RS
305 .030 over Hydro Pistons
Vortech heads milled to 58cc...Performer RPM intake....LT4 cam..Crane Gold rockers...FastChip custom chip...ALum. Driveshaft...3.73 gears with Posi...underdrive pullys...Rebuilt 700R4 with Vette Servo and B&M shift Kit...MSD ignition...A/C Delete No SMOG junk....1997 SS leather interior...B&M Shifter... Ultimate TBI mods...14X3 K&N open Element Non-Drop...Hooker headers....3" exhaust with Flowmaster Cross flow 16X8 Wheels from 97 RS Spohn LCA's Spohn Panhard Bar..LETS PLAY FORD!!
www.geocities.com/feltsb
2250 rpm 4in vac TPS=4.1 o2= 699mv
3425 rpm 5.3 vac TPS=4.14 o2=830mv
4550 rpm 8.1 vac TPS=3.04 o2=800mv
These are the numbers but I think turbo link only picks up at 1.5 seconds so I never got the scan @ 5000rpm. I also have vaccume at wide open throttle (is this right) Please tell me what you think.
Brian Felts
------------------
1989 Camaro RS
305 .030 over Hydro Pistons
Vortech heads milled to 58cc...Performer RPM intake....LT4 cam..Crane Gold rockers...FastChip custom chip...ALum. Driveshaft...3.73 gears with Posi...underdrive pullys...Rebuilt 700R4 with Vette Servo and B&M shift Kit...MSD ignition...A/C Delete No SMOG junk....1997 SS leather interior...B&M Shifter... Ultimate TBI mods...14X3 K&N open Element Non-Drop...Hooker headers....3" exhaust with Flowmaster Cross flow 16X8 Wheels from 97 RS Spohn LCA's Spohn Panhard Bar..LETS PLAY FORD!!
www.geocities.com/feltsb
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Joined: Jan 2000
Posts: 19,659
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Brian,
Everything looks pretty good. The mV readign of the O2 sensor is right about on for an system in the power enrichment mode at lower RPM. As the RPM increases, the mixture gets a little closer to the ideal ratio and the mV reading rises a bit.
The relatively low vacuum is perfectly fine for a loaded engine with high throttle openings (4.1V at the TPS is a fairly high opening). As the engine speed increases, the vacuum increases as well - perfectly normal readings. There should always be some vacuum on a normally aspirated engine, regardless of throttle opening.
The TPS looks good, too. You are over 4.0VDC, so the ECM should be in power enrichment as long as the RPM is correct and the engine is at operating temperature.
------------------
Later,
Vader
------------------
"Let the bodies hit the floor!"
Adobe Acrobat Reader
Everything looks pretty good. The mV readign of the O2 sensor is right about on for an system in the power enrichment mode at lower RPM. As the RPM increases, the mixture gets a little closer to the ideal ratio and the mV reading rises a bit.
The relatively low vacuum is perfectly fine for a loaded engine with high throttle openings (4.1V at the TPS is a fairly high opening). As the engine speed increases, the vacuum increases as well - perfectly normal readings. There should always be some vacuum on a normally aspirated engine, regardless of throttle opening.
The TPS looks good, too. You are over 4.0VDC, so the ECM should be in power enrichment as long as the RPM is correct and the engine is at operating temperature.
------------------
Later,
Vader
------------------
"Let the bodies hit the floor!"
Adobe Acrobat Reader
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