Motec tuning
Lowell Foo
lowell at smartt.com
Thu Oct 4 03:28:38 GMT 2001
The Motec box does have preset dead time calibrations but If
I were you I'd generate my own to be sure. And yes the resistor
would probably throw things off a little.
I have gotten injectors from RC that leaked from the pintles as
soon as they were taken out of the box so now I take those nice
looking flow sheets and throw them out. Flow them yourself if
you like your motor.
---- Original Message ----
Date: Tue, 2 Oct 2001 10:28:35 -0500
From: Andrew Theurer <habanero at us.ibm.com>
Subject: Re: Motec tuning
On Monday 01 October 2001 11:35 pm, you wrote:
> You can do a little experimenting yourself as the Motec box has
> diagnostics that will let you fire the injectors and ignition circuits.
> On the injector test you can fire each one individually and vary
> RPM, PW and firing current. By varying your battery voltage you
> can generate your injector dead time comp table.
Now, doesn't motec have preset calibrations for injector dead time for
specific fuel injector models? Would the inline resistor affect this?
> I zip tied the injectors to the rail and let them flow into their
> own containers. If by chance you have any variations in flow you
> can use the Motecs individual cylinder corrections to even things
> up to start with.
Hopefully this will not be a problem. These injectors came from RC
engineering (bosch 1000cc) and were balanced within I believe 0.2%.
> Later on you can do individual cylinders on the
> dyno via EGT/AF/plug reading etc. Before you install the turbo
> header, TIG on some 1/8 NPT bungs or weld Swagelok 1/4"
> fittings straight on. That will let you pick up exhaust pressure,
> EGT or AF ratio.
>
> Your car should be bike killer when it's all done. Hopefully it will
> put down more than a local here with a very sad HKS twin'd
> Supra making only 619rwhp.
Only 619? haha. Another local Supra is at about 600 on pump gas at roughly
18 psi. At 28-30 psi, these turbos are good for 700 - 800 rwhp depending on
your A/R. Mine are slightly different than most I have seen (2835R) with I
believe a slightly larger compressor wheel, so we will see. Anyway,
walking
'busas on the highway is getting kind of old in my town :)
- -Andrew
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