lookforjoe Posted December 23, 2014 Author Report Share Posted December 23, 2014 (edited) Problems with the GM coils breakup/blowout is resolved. Many thanks again to Piet for all his time spent working on the Dwell Tables for me No knock at any load, no breakup.EDIT: Only up to 21psi. Refer to Tuner Rejoice Thread, Aug 2015. TMM9 found a problem with the dwell voltage lookup axis. More work to be done s of 8/10/15. Edited August 10, 2015 by lookforjoe 3 Quote Link to comment Share on other sites More sharing options...
andyb5 Posted December 23, 2014 Report Share Posted December 23, 2014 Congrats!! Bet it feels nice to have that issue resolved :) Quote Link to comment Share on other sites More sharing options...
854TGA+ Posted December 24, 2014 Report Share Posted December 24, 2014 Awesome job! Quote Link to comment Share on other sites More sharing options...
Rsterns Posted December 24, 2014 Report Share Posted December 24, 2014 Very impressive work as always. I almost hate to ask, but is there anything left to mod or now is it time to enjoy the fruits of your labor? 1 Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted December 24, 2014 Author Report Share Posted December 24, 2014 Very impressive work as always. I almost hate to ask, but is there anything left to mod or now is it time to enjoy the fruits of your labor?Good question Next I have to tune for 28psi range. Running well at 25 on the new dwell table with GM coil packs, so far. Then, I need to do the battery relocate so I can build a new aluminum airbox for the much larger air filter I needed to install - before the warm weather returns. Also have a windage / Teflon crank scraper kit to go in, to reduce parasitic losses under high load conditions. While that's going on, I need to wrap up my lh2.2 / EZK117 install in my 87 X1/9 (stroked 1600cc with euro big valve head, etc...), and switch out the Volvo/Denso alternator for a AC delco unit to go with my serpentine belt conversion on that 1 Quote Link to comment Share on other sites More sharing options...
VulvaS40T4 Posted December 24, 2014 Report Share Posted December 24, 2014 Nice that you got it working!!! I read from somewhere that there was some limitations on dwell time on those gm coils. So you just lowered dwell time on 14V and problem solved? Im running my stock T4 wastespark coils linear 3.0ms dwell time. Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted December 24, 2014 Author Report Share Posted December 24, 2014 Nice that you got it working!!! I read from somewhere that there was some limitations on dwell time on those gm coils. So you just lowered dwell time on 14V and problem solved? Im running my stock T4 wastespark coils linear 3.0ms dwell time. Yes, thanks to Piet - he is the one working on the software. The table probably can be refined, since his changes are all educated guesses based on other systems that people have used them in (thanks Justus & Nathan for your tables). He needs a coil to determine it's precise capabilities at different voltages, so I'll send him one for further research. Quote Link to comment Share on other sites More sharing options...
Rsterns Posted December 24, 2014 Report Share Posted December 24, 2014 The bigger air box sounds interesting, and brings up something that I've thought about from time to time. I've had visions of plumming in a second AC evap into an airbox to provide true cold air induction. I figured that the compressor load wouldn't change so no additional drain on HP. The trick would be switching it on and off while still retaining cabin cooling. Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted December 24, 2014 Author Report Share Posted December 24, 2014 The bigger air box sounds interesting, and brings up something that I've thought about from time to time. I've had visions of plumbing in a second AC evap into an airbox to provide true cold air induction. I figured that the compressor load wouldn't change so no additional drain on HP. The trick would be switching it on and off while still retaining cabin cooling. That is in interesting idea - I must admit it crossed my mind when thinking in general about cooling the intake air. Not sure if the velocity of the air under load would be too rapid to be cooled to any significant degree, though. Would be interesting, none the less. The stock setup is designed to shut down the compressor under high load, not sure what the parameters for AC on/off under load are, but like any other parameter in M4.4, they can be changed if you are using TunerPro, I would expect. Quote Link to comment Share on other sites More sharing options...
fwdGTP Posted December 25, 2014 Report Share Posted December 25, 2014 AC puts a massive amount of load on these engines, and cold air doesn't make much of a difference power wise anyway, since it will be heated then cooled again before actually entering the engine anyway. I cannot see any reason that there would be any gains in that respect, plus I highly doubt it would be able to cool enough air to make a difference anyway. Quote Link to comment Share on other sites More sharing options...
dougy Posted December 25, 2014 Report Share Posted December 25, 2014 that looks faucking awesome ! Quote Link to comment Share on other sites More sharing options...
mattwebb502 Posted December 25, 2014 Report Share Posted December 25, 2014 (edited) AC puts a massive amount of load on these engines, and cold air doesn't make much of a difference power wise anyway, since it will be heated then cooled again before actually entering the engine anyway. I cannot see any reason that there would be any gains in that respect, plus I highly doubt it would be able to cool enough air to make a difference anyway. I agree. my thoughts were that the system must be greater than 100% efficient in order to see any gains, even with the "free" energy of the extra fuel to match the denser air... It's a lossy feedback loop of sorts. It takes work to make that denser/cooler air, and that work has to be recovered before any gains could be realized. I don't know, maybe the added fuel to match the denser (greater) air would yield some power gains. All of this assuming that you could somehow effectively cool the high volume and velocity of intake charge without restricting it, which IMO isn't going to happen. It's an interesting idea, and I have to admit I've thought about it quite a bit before chiming in, but in the end I keep coming to the same conclusion -- thermodynamics tend to dictate the outcome. One way to think about it is the noticeable power loss when running the AC --- even at decent revs, the blower on high, and the cabin air recirculating --- it takes quite a bit of work to cool the cabin, and it's a slow process.... and it's engineered to work at least -somewhat- efficiently/effectively. One final thought that I had was that you would probably be better off cooling the cabin to as cold as possible, a thermal capacitor of sorts, and then at WOT for a brief burst of cold air you could draw your intake from the cabin.. which, of course, is completely impractical. EDIT: or cool down water over time for an air-water intercooler.... And, as it turns out, that's already been tested and proven by a major manufacturer . http://autoweek.com/article/car-news/cool-runnings-fords-supercooler-uses-cold-air-heat-engine-performance Edited December 26, 2014 by mattwebb502 Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted January 3, 2015 Author Report Share Posted January 3, 2015 Been working on cleaning up all the logging sensor wiring in preparation for my new 16 channel logging device that works with TunerPro. Also working on revised MAF table designed to reduce perceived Load - objective being to prevent hitting 100% load cells at 25% throttle (discussion in TunerPro thread). Did a little cosmetic work - removed some more plasti dip from the front cover, installed 80w halogen lo beams (hids don't generate heat - headlamps get frozen over in snow/sleet conditions), reverted to stock (tinted ) tails Did a little cleaning of the aluminum under the hood 2 Quote Link to comment Share on other sites More sharing options...
854TGA+ Posted January 3, 2015 Report Share Posted January 3, 2015 Looks amazing! Loose the stickers. IMO 1 Quote Link to comment Share on other sites More sharing options...
fwdGTP Posted January 3, 2015 Report Share Posted January 3, 2015 Looks stock to me ;) Quote Link to comment Share on other sites More sharing options...
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