Compressor surge is the breakdown in the ability of the compressor to maintain pressure. Air starts flowing backwards across the compressor and mainly bends the blades. It's cavitation. Boat propellers can do the same thing, but it's visually noticeable because gas just instantly appears out...
Flutter happens when the BOV opens, pressure in the charge pipe drops enough so that the BOV closes, the pressure starts rising again because the turbo is still spinning, then BOV opens, and the process loops. It does NOT force air back across the compressor, which is what surge is. Surge is...
Surge is while making boost and has to do with the compressor and turbine mismatch that you mentioned, not letting off the throttle. Flutter when lifting the gas and opening the BOV is harmless.
The ECU won't do a damn thing without a signal from the CAS. The cold start sequence is by default to spray all four injectors. They should still pulse. Warm start pulses all 4 once, then all 4 again for a shorter duration, then starts to sequentially fire them. They don't batch fire. The...
By that logic you should be able to just throw in whatever injectors you want and the ECU should be able to compensate just fine in closed loop. The ECU is blind to anything done to the fuel system. The behavior you describe is meant to make small adjustments because conditions are varaible...
No shit, Sherlock. All you said was "upgrade the fuel system," which could mean something as simple as rewiring the pump. The ECU is blind to what's going on in the fuel system. It just happily pulses the injectors while receiving no input back from the fuel system. I don't get why you...
The MAF isn't saying anything about boost. It reads airflow. You could throw on a large turbo, run stock boost, and definitely hit fuel cut. People can even start hitting fuel cut by just putting on a 16g, exhaust, and intake without ever modifying boost pressure. You could have a boost leak...
There are tolerances. Not every block and head is the same. Timing is approximate. If you mill the head or the block, timing will be off. When did I say anything about tension?
I was being sarcastic against the people who suggested that you should go out of your way to be nice to people who don't like you just because of your car and those people who would vandalize your car because they like some other class of car.
I explained the fuel pressure thing earlier. It needs to be exact. Oil pressure, no. It is just a something to monitor. Don't rely on one gauge. Electricians don't rely on the reading of one multimeter.
If it's cold, don't worry about high pressure during that time. In the manual it states that the stock oil filter is designed to hold 256 psi in the case of high pressure cold oil. The oil pressure is so high when it is cold because the pressure is measured before there are any real...
There's no such thing as a stock Walbro. Try different gauges to measure the fuel pressure, too. You could test if it's the return line by just hooking the return off the FPR to a long piece of thick enough hose and let it run into a gas can while looking at the fuel pressure. That will test...
At -20 inHg your fuel pressure should be ~35 psi, at 0 inHg, or 0 psi, it should be 43.5 psi, and with boost, it should rise 1 psi per 1 psi of boost. It's likely an overrun regulator.
This is pretty awesome. As for using RFID to start it, I don't think I would be able to deal with that. I'd rather try to emulate something like the Prii have where the key just has to be in close proximity of the car.
Very lucky. If you want to go above and beyond and have absolute accurate timing, you want adjustable cam gears and to degree them by measuring the degrees at which certain lift amounts occur. However, I don't know if these numbers are provided for stock cams... I always thought it would be...
So he's going to tow his car to a welder? I bet that's free. I bet the welder charges nothing, too. There are no specific welding services. Maybe people like you know people who weld, but you can't just look up a welder in the yellow pages. I still wouldn't bother or trust welding it. Give...
No, the MAF determines that.In what gear(s)?Sounds like fuel cut. Since you have mods that increase airflow, it's likely because of the mods, but still test for boost leaks.No, that's not the correct term. The MAF is fine. It's the computer that determines when to hit fuel...
WTF You suggested he use an expensive tool he doesn't even have, with skills he doesn't even have, on a hole too deep that even a professional would likely say "use another method." Nice extrapolation. It's not hard to find a carbide or diamond-tipped bit, nor is it hard to find liquid CO2 or...
You could also try getting it really cold by spraying something like liquid CO2 or liquid nitrogen on it and try shattering it. CO2 might not even be cold enough. Nitrogen, yes.
Carbide or diamond is the only thing that is going to eat away at a tap. Even carbide would take forever, as it is even a slow process on a normal hard bolt.
It should be fixed, because leaks like that affect vacuum more than boost. These small leaks are so insignificant when it comes to boost that I completely doubt that the stock equipment (MAF + 8-bit ECU) could even measure that small of a leakage.
Good for them. They're either complete dumbasses or they went the extra mile and have the holes lined with steel thread inserts. Stainless steel threaded into aluminum is a bad idea.
Actually, a lot of OEM exhaust pipes are stainless (yes, stainless DOES rust, just slower than plain steel). Manifolds being stainless is the only good example of cost, being a massive part. They don't use stainless hardware in aluminum because of galvanic corrosion.
It's amazing the reactions you get from children who think they know everything, and how they revolt and misspell when a person who actually has knowledge lets someone know that what they are doing is complete unsafe bullshit. There is a reason why lights go through tons of R&D and DOT testing...
Stock housings are designed for incandescent bulbs, not HIDs. It has nothing to do with being a projector. Your lights will blind people who are oncoming traffic and will blind yourself when it rains or snows.