Pelican Parts Forums

Pelican Parts Forums (
-   911 / 930 Turbo & Super Charging Forum (
-   -   Need some feedback on a new gauge I am working on (

c2turbo 01-25-2008 10:11 PM

Need some feedback on a new gauge I am working on
Ok I have been working on this Porsche gauge for the last month and have the prototype done. here is the deal I hate aftermarket gauges and A pillar pod gauges .I have used aircraft gauges, gauges in the vents and gauges in the center console and they drive me crazy i can't stand the way they look so this is what I came up with it uses the factory computer control stalk on the steering column to control the functions and will display up to 2 wide-band sensors / Boost / air temps EGT's fuel pressure and fluid temp's it is ala cart you can pic whatever sensor modules you need ( I did not design the hardware just the format) the Screen is OLCD and screens can be customized. so give me some feedback on how it looks I will get more pic's in the AM

AngM018 01-26-2008 03:15 AM

phenominal job! that is a clean install!

Craig 930 RS 01-26-2008 09:28 AM

Flashing AFR numbers are fairly unusable, FWTW. AFR data need to be logged to be useful.

Falk930 01-26-2008 09:31 AM

What hardware you are using?
Can any sensor be choosen?
Which voltage scales are required?

estimated price?


DonE 01-26-2008 09:47 AM

Wow Dave - way cool. I like the digital AFR - very very cool. Since you have a DTA, there's no need for logging, but what a great reference while driving. Make another - I'll buy one.

MT930 01-26-2008 09:50 AM

Extremely Cool !

c2turbo 01-26-2008 12:51 PM

I am mounting a USB port on the dash to allow you to plugin a laptop to datalog all sensors and yes you can choose any sensor to monitor or log

Thanks for the feedback

Craig 930 RS 01-26-2008 02:38 PM

Niiiiiiice. Now we're talkin'!
What might be the approximate cost?

c2turbo 01-26-2008 06:34 PM

I had not really thought of selling theses to the public. I was going to make a few for my buddies and myself who don't like the look of an A pillar Gauge ( kind of Ricer) or did not want to get rid of the clock ( lots of good warning lights ) I am going to try one in a 930 tach this week for a local guy I will take some pics if it works let me figure out how much I have in the project and I will see what I can come up with for a price ( not trying to get rich off this deal ) give me a pm if you are really interested and we can figure out something .

Thanks Dave

Jeff Alton 01-26-2008 09:15 PM

Can a moderator please merge the two threads?? :)

Having the AFR appear realtime in front of you is useful, but not as good as logging it. I monitor both banks individually. It is nice to see when you make a small change to your efi program and can watch it, or have someone else watch, at certain rpm ranges. A quick glance is all it takes.


shanghai_todd 01-26-2008 09:22 PM

I want one!!If you consider making more please let me know, that is great work.

NathanUK 01-27-2008 04:11 AM

Jeff, how can you successfully monitor AFR on each bank as the sensors are not supposed to be very accurate if you mount them before the turbo? Maybe you have tt?

Jeff Alton 01-27-2008 09:42 AM

My car is NA..... :( why would a sensor mounted before the turbo not be accurate?


NathanUK 01-27-2008 11:41 AM

Due to back pressure created by the turbo obstructing gas flow.
The sensors are not accurate when under pressure, they are supposed to be mounted after the turbo.
Also, if the sensor breaks due to the heat it may damage the turbo...

Jeff Alton 01-27-2008 02:09 PM

I can uderstand the reason about not wanting parts of it flying into the turbo, but there is no more pressure before the turbo than one might see in an NA car. Where did you read/hear about them not being accurate when "under pressure"?


dean 01-27-2008 04:50 PM


There is pressure before the turbo. That is how the turbo is powered.

Jeff Alton 01-27-2008 08:26 PM

The turbo spins from flow, not pressure. Now I agree that it creates a restriction that can cause back pressure in the exhaust between the turbo and the exhaust valve. I am just curious how much pressure are we talking about here?

I thought David (125 shifter) was monitoring both banks on his efi single turbo as he seemed to know when one side was running lean.

Turbo semantics aside, I had not heard that an o2 sensor would not work in a pressurized area. Not saying it is not true, but I am curious as to why and where I can read up on the theory.


78P930 01-27-2008 09:13 PM


89turbocabmike 01-27-2008 09:30 PM


Originally Posted by Jeff Alton (Post 3732038)
Turbo semantics aside, I had not heard that an o2 sensor would not work in a pressurized area. Not saying it is not true, but I am curious as to why and where I can read up on the theory.


Jeff, there have been a number of technical discussions from Klaus on Innovate's website. The pressure is more of an issue with WB O2's as obviously the stock O2 sensor is pre-turbo.

Nice concept C2, looks like this is based on PLX devices hardware?

c2turbo 01-28-2008 05:48 AM

Thanks Mike Yes it is bases off Plx I have been working with them for the last month or so to help me get something small enough to fit in the space I had to work with in the tach.

Thanks David

All times are GMT -8. The time now is 01:53 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.