Autosport Labs

Adrian performed this magic on my Ferrari tach, wonderful job. Worth doing, accuracy is superior.

Well, that's good to hear! Has anyone else in the Ferrari community complained about the same sound anomalies using that exhaust? No, no one. I have to wonder if it has something to do with the waste spark as the engine is running so incredibly well otherwise..... I swapped exhausts to the previous...

No exhaust swap yet because I wanted to make for darn sure the engine was running properly as I knew it indeed has been. So, I ran it over to the dyno which confirmed this. It's making wonderful power and there are no strange oddities on the graph showing ignition issues, which with Ferrari's -espec...

brentp wrote:Can you swap back in your old exhaust, as a test?

I certainly will, hoping to have time to do it this week. This of course has me very curious and concerned. Will report back once done

I had a thermodynamics epiphany this evening regarding this, but first I will answer your question Brent. Ignition advance north of 4k is very smooth, I even checked it in the dark with a timing light just to make sure I wasn't missing out on some subtlety that my eye would not catch in the light. T...

Normally misfires occur due to vibrating sensor brackets, but I see that yours is bolted right to the case. Hm. Can you put a timing light on the engine with the Megajolt disconnected, and observe what the timing looks like above 4000 RPM? This is definitely a strange occurance as this is where eve...

Here's the vid I made shortly after I completed the rebuild showing the engine and the MJ working just fine (engine was a bit rich at the time but that's okay!)

http://www.youtube.com/watch?v=oEm6BGwTyuc


See, I'm not crazy. Not much anyway.

Ran engine in limp mode with EDIS8 only. It ran well until about 4k rpm when it started to misfire, lots of popping etc. It also made the rattling sound, but the sound was not as present. I pulled the thick aluminum cam belt cover which I have the VR sensor attached to and made sure it was locked do...

That is very strange. We've never had a report of rattling before! Can you swap back to the old distributor setup, just as a test, to see if the rattling occurs there as well? Can you hear the rattling if the system is running on EDIS-8 alone (megajolt disconnected) ? I will give that a shot. Thank...

I checked oil pressure tonight with a mechanical oil pressure gauge to absolutely rule out this being a mechanical rattle, which I did. Pressure is fantastic. The heads are fresh with guides, new tappets, shims, valves, billet cams, this is NOT a mechanical issue. I'm getting a little frustrated wit...

I'm baffled by this. The engine runs fine and still makes very good power, and the MJ software is showing the engine is running perfectly normal, but above 4k rpm there is a rattling can sound inside the engine that almost sounds like detonation. Again, the software says it's running fine at all rpm...

I'll do that this afternoon if I have time. Just tried swapping the EDIS module and didn't seem to make a difference (so at least I know I've got 2 that work... or 2 that don't!). Going to see if a new coil pack makes a difference too. I'll have spares of everything by the time I've finished... :( ...

I just found some prior threads with some useful information. Sounds like the Megajolt/C will answer this problem. Please Brent, let me test the prototype, I have the engine for it!

To be even more specific, at 7400rpm it feels like I've hit a rev limiter as all power is essentially gone like a rug was pulled out from under me. There is no 'pinging' type rattling sound at all, just sounds like I've hit 'the end' of its capabilities.

Hi everyone, I just completed a very custom designed 3.4L Ferrari 308 road/rallye engine and employed the megajolt system to run things. Brilliant system, just what I needed but I've run into a problem. Max rpm on this engine is a bit north of 8000rpm and the system is cutting out on me at 7400-7500...