924Board.org

huckster · Joined: 22 Dec 2006 Posts: 115 Location: Burnaby B.C.

So I have taken the plunge and ordered a megasquirt 2 unit to install in my
79 924 so I have to start getting parts. I think that I would like to eventualy
turbo it like racerboy did run the exaust to the cold side 200 or more horse
power would be great .
So what size injectors do I need I think I read 30 or 35lbs injectors would
be about right I all so remember reading about pencel injectors .
Allso do you need an O2 senser do you need a seprate driver or can you just plug it in to the megasquirt 2
Have been working on cars since I was 15 thats 35 years had a 924 for 10 years now but have only been driving it dailyfor 6 months and need more power.
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77.5 project car have never driven. burgundy
79 parts car sea foam. blue new clutch and shifter bushings
79 driver yellow new shocks water pump shifter bushings
96 ford escort sw

pocketscience · Posted: Sat Nov 08, 2008 5:18 am Post subject:

Hi,

You don't need an O2 sensor, but it will help alot with getting AFR right. The LC-1 from Innovate comes with everything you need - and MS2 has an input for O2. Other guys are using other O2 options (JAW, AEGO), so do some reading and see what works for you.

I've currently got 26lb injectors for my install, but I'm going to be NA initially.

Would recommend getting a stimulator and a relay board - simplifies alot of things.

Good luck with it! If you haven't read my thread it's linked from my sig below

Cheers,
_________________
Whoever said you can't buy happiness forgot about Porsche!
81 924 N/A, GTS lights, Saratoga, interior, headers, Integral cam, EFI (sold)
95 993
69 911

Min · Posted: Sat Nov 08, 2008 10:46 am Post subject:

I'm running 21 pound injectors na

Min
_________________
Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting.

huckster · Joined: 22 Dec 2006 Posts: 115 Location: Burnaby B.C.

Thank you for your input I wil be looking for something around 21 to 26 to start of with. Turbo will come later think I will start with NA. Might start with
LC-1 on the CIS to see where I am now.
_________________
77.5 project car have never driven. burgundy
79 parts car sea foam. blue new clutch and shifter bushings
79 driver yellow new shocks water pump shifter bushings
96 ford escort sw

Min · Posted: Sun Nov 09, 2008 8:25 am Post subject:

Martijnus · Joined: 29 Dec 2006 Posts: 2019 Location: Netherlands

You should collect lots of datalogs from your LC1.

That way you'll know how to create a nice AFR table which will make your EFI tuning super easy (I think).

I don't have any direction for my AFR table so I don't know where to start... you're better off with some targets you obtained while still running CIS.
_________________
"Rule: Turbo's make torque, and torque makes fun." (C. Bell)

924 "50-jahre", 1981.
MSII/extra, LPG, ITB's, 5lug.
To be turbo'ed in a while.
Killed her at the Nurburgring, Porscheless at the moment

Min · Posted: Sun Nov 09, 2008 5:36 pm Post subject:

vemser · Joined: 06 May 2008 Posts: 46 Location: Russia, Moscow

VEMS cost a little bit more, but it's have WBO onboard.

huckster · Joined: 22 Dec 2006 Posts: 115 Location: Burnaby B.C.

So thank you for all the helpfull info you guys.

Here is an update on the parts I have collected so far.

MSII unasembled kit
jimstim 1.4 unasembled kit (solderded it together sat. night)
Lc-1
delco high res 30 lbs injectors
fuel injector conectors
throttle lbody from a jetta with TPS
lots of wires and heatshrink tubing
elecrical terminals and solder

Still need
fuel presure regulator
lots of hours ? to install and tune

First stage Plan on takeing a siginel from coil to control efi to start .
crank trigger and ing.control will be second stage
_________________
77.5 project car have never driven. burgundy
79 parts car sea foam. blue new clutch and shifter bushings
79 driver yellow new shocks water pump shifter bushings
96 ford escort sw

pocketscience · Posted: Tue Nov 25, 2008 8:25 am Post subject:

What are you doing for a fuel rail? You're going to get IAT and CLT sensors I imagine too...?

G.
_________________
Whoever said you can't buy happiness forgot about Porsche!
81 924 N/A, GTS lights, Saratoga, interior, headers, Integral cam, EFI (sold)
95 993
69 911

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

He bought my spare NA endwrench rail

_________________
erstwhile owner of just about every 924 variant ever made

pocketscience · Posted: Tue Nov 25, 2008 8:34 am Post subject:

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Exactly. The one I had was the steel variety with the brackets welded on.
_________________
erstwhile owner of just about every 924 variant ever made

Pieter · Joined: 06 Mar 2008 Posts: 53 Location: South Africa

I took a fuel rail off a BMW straight six, cut it into peices and welded it back up, works like a charm ( got the whole rail with injectors and bosch FPR for $40, but I would not suggest this route). CLT sender for an Alfa works perfectly, has the same thread and costs around $3, the only snag is that it grounds on the body of the sender, so it might have some noise on the signal. Oh, and you will have to calibrate it with easytherm or the likes, I glued a LM35 precision temp sensor to it and threw it in a pot to get different points.

pocketscience · Posted: Thu Nov 27, 2008 3:57 pm Post subject: