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1h
comment Reprogramming a Magneti Marelli Microplex MED604C
If I'm not mistaken, that ECU can't be reprogrammed. It would have to be "chipped", i.e. physically have different chips soldered on.
2d
comment Why do Subarus run so rich under boost
It's not well-calibrated right at the edges, e.g. from 10.3 or so down, but it's pretty accurate from 10.5 to 14.7 (and up). But be that as it may, the fueling map actually calls for 10.5 under high load.
2d
comment Why do Subarus run so rich under boost
Subaru has a semi-wideband 02 sensor. It measures down to 10.2 and up to 20. I read it through the OBD2 port using either Torque or the Tactrix cable.
2d
comment Rebuild for longevity
FYI: the single most important thing you can do to increase the life of your engine is regular oil changes. And I mean every 5000km or 4 months, not every 15000km like the book says. A friend of mine has a Honda with 700 000km on the odo and the engine has never been opened. He does his oil every 3500km. I think that's a bit too frequently, but he's the guy with the evidence.
Jul
31
comment What is choppy throttle response and bad fuel mapping and can it be fixed?
One would think that the guys who designed and built the bike had ridden it at least once before signing off on it.
Jul
30
comment A relatively new tire question
I will definitely not buy the same brand again. Bubbles tend to burst and cause accidents.
Jul
30
comment How to get a motor to Top Dead Center
There's nothing like dropping something small and hard into an engine to turn a 3 hour job into a 2 day job.
Jul
29
comment Is there a way to put Prius with dead battery into neutral?
You'll have to push a bit harder.
Jul
29
answered Should I pull up the handbrake as high as it will go when parked?
Jul
28
comment Minimum RPM at idle speed
I would be surprised if there were much difference between a truck and a bus in terms of idle speed.
Jul
28
comment Minimum RPM at idle speed
What do you mean by "handle"? I expect that reasonable speed to be the quoted 540. Any lower and the flywheel has to be really big and heavy.
Jul
28
answered Minimum RPM at idle speed
Jul
28
answered Does wheelspinning damage my car?
Jul
24
answered Damage to Audi differential with new front tires and old rear tires
Jul
24
answered How to find the diameter of an automobile inner tube
Jul
24
comment How long does items in the engine last in general for standard size cars?
Mind you, for that money, Id rather just buy a new or low-mileage import engine and have it installed. It may even cost less.
Jul
24
comment How long does items in the engine last in general for standard size cars?
Why would they need to replace a cam belt AND a cam chain?
Jul
24
comment Is it reasonable to charge the customer $1000+ to assemble the top of the engine?
What car is it?
Jul
23
comment 2001 Elantra keeps throwing the same check engine light code
Nah, it's a very rare problem. The best guess is that the new Cat isn't good quality or you are running too rich for some reason. If your car doesn't smoke or smell like rotten eggs, then it's probably the cat again. Do the injector cleaner thing anyway. It won't hurt.
Jul
23
comment VW Golf IV Possible Engine Misfire
Yes, when the ECU finds a serious problem, it switches over to a low octane fuel map (called limp mode or safe mode). It uses more fuel and decreases ignition timing to prevent possible knocking (every petrolhead's worst nightmare). When the problem goes away, it will switch back to the normal map. When the problem pops up again, you'll get the bad performance again. Rinse and repeat.