5.3 chevy help

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5.3 chevy help

Postby josh113 » Sun Jan 27, 2013 6:04 pm

i got a 5.3 chevy i m going to put in my 1980 camaro and
i m looking in to a ms3 and ms3x so i can do Sequential fuel/spark on it and need help the Quickstart Guide said 11. Set the base settings (engine type, ignition setup, wheel type.) Note! Never start creating a tune "from blank" always use a base tune or start connected to your Megasquirt.
where do you get a base tune or does it create one when i set everything up and what all do i need to do to get the car running on the Megasquirt i know i need to Setup sensor calibrations is there anything else i need to do


sorry if this is in the wrong place or something is wrong I'm new to this


thanks josh
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Re: 5.3 chevy help

Postby ashford » Sun Jan 27, 2013 7:08 pm

here is a turbo 5.3 msq all stock except the turbo
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Re: 5.3 chevy help

Postby nismoautoxr » Sun Jan 27, 2013 7:11 pm

when you build and install the MS whichever variant you end up using...once the firmware is loaded into the MS it also loads a base MSQ/tune into the MS and you configure that base MSQ based on your setup . That is where the tune is generated and you tune from there.

If you wanna toy around with tuner studio you can download is and take a look at the example projects and you can play around looking and familiarizing your self with how it works . You can find it at www.efianalytics.com
Ricky-
1995 Nissan 240sx, 403 LS strokerv8 N/A 6speed trans
MS3&MS3X v.3.0 PCB
42lb/hr Hi-Z inj.,230/232 @.050 on 114LSA cam
sequential fuel and sequential spark
LS3/LSA card MAF sensor
97 Mazda MX5
MS3 2002 vvt motor
.60 trim T4 Turbo at 15 PSI
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Re: 5.3 chevy help

Postby josh113 » Mon Jan 28, 2013 6:38 am

ok thanks for all the help is there any way to run a 4l80e trans off the ms3 or do i need 2 megasquirts to do that and is there any good tips for tuning i need to know im thinking about doing a twin turbo off ebay and running it at 5/10 psi is it hard to do the tuning on that and how is the Boost Control and how do you seat it up


thanks josh
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Re: 5.3 chevy help

Postby Matt Cramer » Mon Jan 28, 2013 6:53 am

Right now your best bet for running a 4L80E is either James's Microsquirt transmission code or a GPIO running MegaShift.
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Re: 5.3 chevy help

Postby josh113 » Mon Jan 28, 2013 8:10 am

do i need to megasquirt to run the trans one for the motor and one for the trans or can i use one for both
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Re: 5.3 chevy help

Postby Matt Cramer » Mon Jan 28, 2013 8:55 am

The trans control device is separate from the MegaSquirt.
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Re: 5.3 chevy help

Postby josh113 » Mon Jan 28, 2013 4:12 pm

Ok thanks do I need to know Anything else about tuning and how Does the boost control work do I need anything else to use it
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Re: 5.3 chevy help

Postby jsmcortina » Mon Jan 28, 2013 4:20 pm

As with any aftermarket ECU, you need to understand engine basics and tuning principles.

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I can supply, repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

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Re: 5.3 chevy help

Postby josh113 » Thu Jan 31, 2013 6:32 am

thanks for all the help i just ordered a MegaSquirt-III so im going to see if i can get it to work
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Re: 5.3 chevy help

Postby josh113 » Wed Feb 06, 2013 7:08 am

i got my ms3 and a ez tcu and the ez tcu requires a square wave type tach signal that pulses once per cylinder firing and i need to know if i can get it from the ms3 tach out
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Re: 5.3 chevy help

Postby Matt Cramer » Wed Feb 06, 2013 7:39 am

josh113 wrote:i got my ms3 and a ez tcu and the ez tcu requires a square wave type tach signal that pulses once per cylinder firing and i need to know if i can get it from the ms3 tach out


That's exactly what the standard tach output setting will do.
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Re: 5.3 chevy help

Postby josh113 » Wed Feb 06, 2013 7:55 am

ok thanks is it 12v i do not know if i need 12v or not just asking and can i use the tps signal and not the 5v and gnd i need to have tps to the tcu and the ms3
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Re: 5.3 chevy help

Postby elaw » Wed Feb 06, 2013 8:02 am

The MS3X tach output will supply a signal that swings 0 to 12 volts if you install the JP3 jumper as shown on this page:http://www.msextra.com/doc/ms3/hardware.html#ms3xjps
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Re: 5.3 chevy help

Postby josh113 » Wed Feb 06, 2013 8:22 am

what is it if the jp3 is not in
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Re: 5.3 chevy help

Postby elaw » Wed Feb 06, 2013 8:29 am

Without JP3 it functions as an "open collector" output which would require a pullup resistor to an external voltage source. Or you could do some creative modding on your MS3X card and install a pullup resistor to +5 volts which would make the output swing 0 to 5 volts.
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Re: 5.3 chevy help

Postby josh113 » Wed Feb 06, 2013 8:43 am

can i use the tps signal and no 5v or gnd i need to tps signal one for the tcu and one for the ms3 and they both have 5v tps and gnd so i need to use the tps signal for both and the gnd and 5v from one can i just not use the 5v and gnd on one or do they need to be used
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Re: 5.3 chevy help

Postby billr » Wed Feb 06, 2013 9:35 am

As long as the MS and TCU are grounded to the same place, they can share the TPS signal. Run the ground and power for the TPS from the same controller (MS or TCU), but not both, especially don't run power (+5V) from both. I guessing the trans shifting (TCU) will be less sensitive to TPS than AE set by the MS, so I would suggest running ground and power (to the TPS) from the MS, to ensure greatest possible accuracy for its TPS input.
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Re: 5.3 chevy help

Postby nismoautoxr » Wed Feb 06, 2013 10:28 am

could they be shared through CAN?
Ricky-
1995 Nissan 240sx, 403 LS strokerv8 N/A 6speed trans
MS3&MS3X v.3.0 PCB
42lb/hr Hi-Z inj.,230/232 @.050 on 114LSA cam
sequential fuel and sequential spark
LS3/LSA card MAF sensor
97 Mazda MX5
MS3 2002 vvt motor
.60 trim T4 Turbo at 15 PSI
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Re: 5.3 chevy help

Postby atomic6 » Wed Feb 06, 2013 11:22 am

nismoautoxr wrote:could they be shared through CAN?


They could have been, if a Microsquirt was controlling the transmission, but with the FAST ezTCU controlling the transmission, there is not way for the can bus to communicate to the TCU.
Last edited by atomic6 on Wed Feb 06, 2013 1:17 pm, edited 1 time in total.
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