TT402LS1

iTrader: (5)

Ok, doing some research. I know you can boost by gear, (I'm going to use AMS 1000) using your speed VSS signal. It's actually boosting by speed, which if you spin, it not the ideal situation. Now that Speed Hut has came out with GPS speedometers, it there a way to use one of them to "boost by speed"??

Thanks!

Project GatTagO

iTrader: (7)

Take the signal off the front wheel ABS sensor.

Theoretically if the GPS speedo was built with a 0-5volt output, then you can do this. Is there such a speedo out on the market?

Andrew

TT402LS1

iTrader: (5)

I don't have abs (67 chevelle ). Yes, Speed Hut makes GPS gages.

Project GatTagO

iTrader: (7)

If you use ATS spindles, then you can have ABS sensors in the front. I have a 1970 GTO and use that for my speedo.

You need a GPS speedo with an output that varies voltage based on speed. Do they make THAT?

Andrew

TT402LS1

iTrader: (5)

I'm not sure, but I will be finding out this week!

TT402LS1

iTrader: (5)

Called Speed Hut today. It will not worked, liked I hoped. So tell me more about the ATS spindles and abs sensors. Will those spindles work with a 17" wheel?

Ron

slowride

iTrader: (3)

Doesn't Dakota Digital make a GPS speedo adapter? I was looking at them for a cooling fan project and it might work out for a boost controller also, but I haven't looked into it much.

Project GatTagO

iTrader: (7)

They will definitely work with 17" wheels. I run 18's.

http://www.speedtechperformance.com/...rod/prd136.htm

Andrew

stevieturbo

It shouldnt be too hard to adapt some sort of tooth setup to a front wheel, brake disc/rotor, flange etc in order to create a trigger for a sensor to read on either front or rear

On the front of mine I adapted a Subaru ABS trigger ring and on the rear I use the bolts from the brake rotors for the teeth

Boostedhatch

How about using autometer gps setup.

stevieturbo

a mechanical reading is always best, GPS should only be a backup unless it's running an external antenna

skinnies

iTrader: (33)

Done it on many cars using a 1gt101dc sensor reading back of wheel studs or something on the hub. Fed this to either holley efi or hyperkontrol boost controller and works great on the street!

TT402LS1

iTrader: (5)

I would like to do it off the front wheel. If you do it off a rear wheel would work ok, but if you spin, your mph reading will go faster and your boost will go up.

Ron

69-chvl

iTrader: (11)

Can you guys tell me the range of boost that your controlling when using boost/speed? Like ~8psi to 16psi for example???

slowride

iTrader: (3)

Anybody do this with a working ABS system and not **** anything off with the extra input impedance of the boost controller? I would tap into the front ABS on my z if that's a go.

stevieturbo

Depends. If the OEM sensors are 2 wire then this will be more difficult.

If 3 wire hall sensors, then it shouldnt pose any problems.

stevieturbo

8-16psi should be quite easy if everything is configured properly.

I just use my ecu to control boost and so far have only used it in the 7-25psi range ( 30psi by accident once though )

But as there are many variables with each system, there is no simple answer as to the range of boost that can be used with each system, but 8-16 should be easy for most.

TT402LS1

iTrader: (5)

The boost control I would like to do is- 0 to 30 mph 5lbs of boost, 30 to 50 mph 8lbs, 50 to 80 mph 12 lbs, 80 on 18lbs of boost. The AMS 1000 is what I'm going to be using for a boost controller. It will also be controlled by CO2.

Ron

slowride

iTrader: (3)

They are 2 wire mag pickup on a C5.

stevieturbo

Pairing up 2 wire mag sensors can be trickier.

You might have better luck using some of the VR to hall signal conditioners as they call them, and then use the square wave output from those for the controller.
They should have less impact on the signal the ABS ecu sees, so it's more likely to remain happy.

Other option is if the trigger wheel is visible, just add another sensor to look at the wheel. Although on some cars they hide the wheel itself so that isnt easy either