It's working good so far. I ended up choosing the QG because it was $1500 less than the GA! It also seems to be more widely available so parts shouldn't be a problem to acquire. It fitted nicely, all my mounts were reused with the exception of the left side, a slightly modified B15 one was used there. The air box was removed and a cone filter is now being used. B12 header was used to avoid cutting & welding, QG O2 sensor was plugged into it. Changed belts. Nothing was done to the engine when installed though, plugs were good, oil was almost golden. Mech said run it for a month while the warranty lasted just in case.
So far it's been a lot better on gas consumption than the GA15s, I got about 200km on the half tank it had when it came back from the garage with conservative driving and little use of a/c. You guys think this is good?
There are some small issues to be sorted out though:
1. All gauges in the instrument panel are working again except the tachometer. Was told that the tach has to be connected to the ecu as opposed to coil in old engine. Looking for a reputable electrician in South to fix this.
2. The coolant temperature gauge is always at half now. If idling or driving slowly it goes up a little bit. This is with no thermostat. With old engine, temp gauge never went up to half. Actually when the QG was put in, it too was reading around this same temp but the ct sending unit looked bad. So unit from old engine (which was new) was put in QG & now getting these readings. Is this how it's supposed to read?
3. Those of you with B12s may know that on the firewall there is a bronze coloured metal plate next to the booster. This was removed and the hole beneath it widened to fit the ecu harness. The thing is, it doesn't fit snug, there are spaces right round the harness. I'm worried about water getting through there and affecting the ecu. The areosol canned spray foam came to mind for filling up the gap. If this is not suitable what do you suggest?
4. Just WTK, where's the port on the ecu for connecting a diagnostic scanner? There doesn't seem to be one. All the outlets on it have wires connected.
Also, what do you think abt the placement of the ecu? It's not screwed down or secured to anything, but with all the wires and harnesses behind there it doesn't move.
5. When cold starting, I get white smoke and droplets of water out of the muffler. Not just on mornings but whenever I first cold start for the day, evenings too. Even if, let's say I start at morning with the smoke & water, drive and park up whole day, in the evening when the engine is cold and I start, I will get the smoke. It won't smoke when it's warmed up though. Why is this?
- QG15DE engine
- Hole in firewall for harness.
- Placement of ECU
Lastly, I apologize for such a long post!
I hope people will benefit from my experience. Dunno what I woulda do without tuner yes.
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