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PostForum: Ignition Map Library   Posted: Wed Jan 28, 2015 10:12 am   Subject: Map for alfa boxer 1.7 16v

Hi Basha

Sorry, I can't really help you, I haven't had to think about Megajolt since I fitted it almost 5 years ago, and I don't know anything about fuel injection, I've got carbs. What car is the ...
PostForum: Operation   Posted: Fri May 27, 2011 3:27 pm   Subject: Driving at higher altitudes

What are the affects on the engine of driving at higher altitude and what changes in timing advance can be made to help performance at altitude?

I'm driving from the UK around the Swiss Alps in Jul ...
PostForum: Operation   Posted: Fri May 20, 2011 4:03 pm   Subject: Tacho problem

Thanks for that link Brent - It works fine now!

(I spoke to Chris at Trigger Wheels and there are two diodes and a zener, as expected.)

Instead of using the Trigger Wheels circuit, I made up a n ...
PostForum: Operation   Posted: Mon May 16, 2011 7:19 pm   Subject: Tacho problem

Thanks Brent, that makes sense. I'll try it. (I assume the resistors have to be in parallel with the diodes and not just in series?)

Do you know what is included in the Tach driver sold by Trigg ...
PostForum: Operation   Posted: Mon May 16, 2011 4:45 pm   Subject: Tacho problem

I'm using a 1968 Porsche 912 (VDO) tacho with a Alfa Romeo flat 4. It's mid engined, and the MJLJ and Edis modules are behind me in the cockpit, with a long wire going to the tach in the dash

Befor ...
PostForum: Powered by Megajolt Gallery   Posted: Sun Nov 07, 2010 7:04 pm   Subject: Porsche 550 Spyder Replica

Thanks Danny.
Can anyone make any coments on the dyno print out, and where I could perhaps make any improvements? (other than make any changes to the engine!)
PostForum: Powered by Megajolt Gallery   Posted: Thu Nov 04, 2010 10:28 am   Subject: Porsche 550 Spyder Replica

Dyno printout
PostForum: Ignition Map Library   Posted: Thu Nov 04, 2010 8:04 am   Subject: Map for alfa boxer 1.7 16v

Thanks Danny, yes that's me. I thought I'd messaged you when I started the Megajolt project, obviously not. It was inspiring to see another 550 with the same ignition system, I think a lot of the oth ...
PostForum: Powered by Megajolt Gallery   Posted: Wed Nov 03, 2010 9:01 pm   Subject: Porsche 550 Spyder Replica

Martin and Walker replica of the 1955 Porsche 550.
Alfa Romeo engine and 5 speed gearbox from Alfa 33. 1.7L, 8v, 118bhp
(featured on Fifth Gear a few years ago) ...
PostForum: Ignition Map Library   Posted: Tue Nov 02, 2010 10:47 am   Subject: Map for alfa boxer 1.7 16v

Thanks Brent.

I'll post some more pics and info in the Powered By section.
PostForum: Ignition Map Library   Posted: Mon Nov 01, 2010 4:39 pm   Subject: Map for alfa boxer 1.7 16v

If you downloaded the map, let me know how it works out for you, I'd be really interested.

PostForum: Ignition Map Library   Posted: Fri Oct 29, 2010 8:09 am   Subject: Map for alfa boxer 1.7 16v

Ignition Map.

It starts and idles faultlessly, and pulls evenly through the rev range to 6500rpm (though I rarely take it above 5500). I'll scan and attach the dyno results when I get chance.
PostForum: Ignition Map Library   Posted: Fri Oct 29, 2010 8:04 am   Subject: Alfa Boxer 1.7 8valve

I fitted Megajolt earlier in the year and spent a couple of hours on the rolling road at Northampton Motorsport to get it tuned correctly. Since then I've done about 2K miles.

Alfa Romeo flat four, ...
PostForum: Ignition Map Library   Posted: Tue Sep 15, 2009 2:19 pm   Subject: Map for alfa boxer 1.7 16v

I'm working on a map for my alfa 33 1.7 8 valve, they're probably quite similar.

I found a graph of the ignition curve for the early Alfasud - probably 1300 (printed in 1975!). Although they state ...
PostForum: Operation   Posted: Tue Sep 15, 2009 8:14 am   Subject: Breaking in engine

Hey Danny!

Thanks for the welcome - I can't wait to get this up and running! Almost there.
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