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Clonebug wrote:

MarioVelotta wrote:We where able to add timing, out to 50°+ and afr from 11- 16:1. It was just really happy at about 45 with 13:1. No misfires and really smooth.

I love your intercom Karl, that was priceless!

Was it that loud????

It wasn't loud with the headphones on

They add a level of relaxation to the situation, real easy to hear what each other are saying without yelling or straining to listen over background noise. Makes road trips awesome again with clear tunes that automatically mute once you start speaking. Has push to talk feature if you just want ear muffs with manual speak control. Cell phone works through the intercom as well. Rugged Radios has all kinds of options.

This should be ready by morning, it's only 40% uploaded right now...

Nice going you two!

Wow! Nice work on the video Mario! Thanks!

I have bucking and twerking when cruising under very light load between 1500 and 2000 RPMs at times. I figure it is from non ideal syncronization of the ITBs at very light throttle opening (under 5% open). One side leads the other a bit. I will try more timing.

Nice power for a low boost system, god I need to finish my intercooler install!

Steve Arndt wrote:I have bucking and twerking when cruising under very light load between 1500 and 2000 RPMs at times. I figure it is from non ideal syncronization of the ITBs at very light throttle opening (under 5% open). One side leads the other a bit. I will try more timing.

Might want to have that twerking looked at .

Ever have it happen completely off the throttle in gear, down low? That's what's got me hoping I've got a throttle cable "problem".

yep. Not happy with my setup. I have ran four ECUs all tuned out and a couple kinds/sizes of ITBs and four kinds of linkage connected to them.

IDAs are so smooth and easy.

My last try is sync link linkage before I throw the ITB shittery away and get a plenum setup like you.

I wonder how much gear lash...and SAW axles effect the surge/jiggle. It does kinda feel like I've got torsion bars for axles when it really gets to shaking.

The single t body plenum setup can definitely breath. I think if I keep working on the combo I'll have a pretty well rounded package. Priority is on drivability for me. I couldn't believe how well it made power up top. Part of me wanted to push up the boost with some alki and see where the power fell off. But I just couldn't see the use in pushing it any harder. More boost wasn't going to help at all below 4,500 rpm where I normally drive the car.

Steve have you done much cylinder specific tuning? I was surprised how much more temp spread I've got with EFI vs. Dual Dells. Carbs deliver fuel based on actual air flow (basically) port injection delivers a set amount of fuel based on math. Some type of per - cylinder tuning is needed with EFI to even temps out at various loads/rpms. Something that runner on runner carbs do automatically...or at least try to.

I haven't done any per cylinder tuning yet. I've had the capability ECU-wise for years now. I don't have the data to analyze for making the changes yet.

IR carbs, the original sequential fuel delivery

Steve Arndt wrote:I haven't done any per cylinder tuning yet. I've had the capability ECU-wise for years now. I don't have the data to analyze for making the changes yet.

IR carbs, the original sequential fuel delivery

I just so happen to have a stand-alone 4-channel CHT gauge setup sitting around, you're welcome to borrow it. It's crudely mounted in a cardboard box along with an LC-2 wideband gauge right now, but I'd suggest extending each lead the same amount so you can mount it up front. Or you could possibly set it up to log the gauges data and just stick it under the back seat. I've seen the hottest cylinder change depending on rpm/load, but I haven't gotten quite that detailed with my cylinder trim tables just yet. Just trying to keep the hottest holes (1 & 4 for me) a little closer to their neighbors. It's not as good as 4-channel wideband + EGT + CHT obviously, but it gives you something to work with.

I keep thinking this engine would be so fun to stuff into Mario's '67 and beat up the 1/4 mile for a season . He's caged and his trans could take it, pretty light weight car. My wife would kill me though . I keep telling her I want to swap the little injected 1776 from her daily driver into my baja so I can go putt putt around on some trails...I miss that. She won't let me have her engine .

I'll trade ya....

We know what that HP would do in my car, now it's your turn to hit the tree for a pass or two

turbobaja wrote:

Steve Arndt wrote:I have bucking and twerking when cruising under very light load between 1500 and 2000 RPMs at times. I figure it is from non ideal syncronization of the ITBs at very light throttle opening (under 5% open). One side leads the other a bit. I will try more timing.

Might want to have that twerking looked at .

Ever have it happen completely off the throttle in gear, down low? That's what's got me hoping I've got a throttle cable "problem".

Let me come back on that. I had the same problem on my car (MS1 - single throttle body), and I believe it has to do with the AFR values when you get out of Fuel Cut. I have added a lower KPA line to my fuel map, that I have tweaked to help 'smooth' the transition to the richer idle region of the map. It still needs a bit of work but I'm tuning alone and it's already much better.