- Oct 7, 2012
- Staten Island, NY
EFI all day
I went to high school[ Capuchino] with Henry He was 1 year older than I am and he certainly knows his stuff.You're good. Henry is still at it, right up the road in San Mateo. Part time work... Nice guy and very helpful. I've gotta get my Oldsey's 4-Jet to him!
Lars Grimsrud has done 2 or 3 Q-Junks for me and offered great advice.
Chrysler is still against MAF. The 3.2, 3.6, 5.7, 6.4, 6.2, not sure what else all use MAP. My Caliber also used speed density on its 2.0 4 cylinder.EFI can be stupid simple, much simpler than a carb with all its mechanical gadgets, and typically does not require frequent upkeep.. I'd go the EFI route any day of the week.
Are we talking factory configuration? I'd spec a car (or retrofit one with a new system) that needed only the minimum of EFI components-- specifically a speed density system that does not require a MAF. Something like a 1992 Saturn (if we're sticking with 30 year old cars) comes to mind.
Manifold absolute pressure (MAP) sensor, throttle position, coolant temp sensor, air intake temp sensor, and O2 sensor for closed loop feedback, IIRC is all it would really need.
There were a few manufacturers that were steadfastly against MAFs, preferring speed density configurations. Chrysler was one of them and I believe Honda and Hyundai/Kia as well, possibly others. Sadly, more modern emissions requirements ruined all that and forced most engines to transition to MAF based air metering. Not saying MAF setups are inherently unreliable, but you're adding one more sensor to the mix that is not essential to EFI operation.
^^^ ThisA 30 year old car would be a 92 and not likely to have point ignition or a carb. I would buy one with EFI and electronic ignition and accumulate some spare parts for it while they are still available.
Is a MAP that much more reliable than a MAF sensor. I have never had a MAF sensor issue - keep it clean is all. Its nothing more than a thin wire and a current sensor? My 380K mile, 14 year old Nissan has the original MAF sensor.owned were all speed density
Thats the cruxt of it isn't it. You don't just need the parts, you need the software, and the software for the chip keys along with it.don't get me started on VIN-tying everything together.
Most MAF equipped engines in my experience also have a MAP sensor. The extra sensor just adds another variable when you're troubleshooting a random "could-be-anything" code, which are already difficult enough to diagnose in the absence of a good live-data scanner (and the knowledge to use it).Is a MAP that much more reliable than a MAF sensor. I have never had a MAF sensor issue - keep it clean is all. Its nothing more than a thin wire and a current sensor? My 380K mile, 14 year old Nissan has the original MAF sensor.
Whatever for?Imagine the following:
You have the possibility to own an already 30 year old mass produced completely rust free car. The car is going to be your daily driver for the next 30 years and until then the car will be 60 years old.
My vote is EFI. But there is also mechanical fuel injection on some European cars. We use mechanical fuel injection on aircraft engines and it's amazingly simple and reliable.
Here is a Lycoming mechanically injected engine. The throttle body senses airflow, moves a diaphragm and meters the fuel. The injectors are simply orifices with no moving parts. The injector lines are the tiny ones on top of the the engine.
Half a million $$$$ with the prop setup. Remove the prop and it is a fancy Porsche engine.