Tungsten

I installed a B&M cooler but it was a 70264. I think it would be easier to fit the 70268 unit though.

If your truck came without the flares, don't bother putting them on. If your truck came with the flares, it's best to remove them. I leave my flares on because the fenders behind the flares are rusty and they hold my mudflaps.

try tightening up the nuts in the back so the tach gets better contact with the pcb

The 95 ECU is different from a 91 because it incorporates a "Vehicle Speed Sensor" and it uses a different oxygen sensor on top of that. The way you can tell if it's a California model is to look if the EGR system has a temperature probe for EGR monitoring because all California models have a monitored EGR system.

sweet

Junk.

You forgot to mention that the firewall has to be cut to use the Z31 plenum opposed to the WD/D21 plenum.

I don't know if a custom cold air intake will do much without a full exhaust. One reason I want to at least remove the rib pipe from mine is because I already have a 2.5" exhaust with headers so there might be a difference at this point.

sell the fender flares

now i have to go raid a D21 4 banger for injectors

ungreasable ball joints are fine if they are sealed right i'm still on 20 year old factory ball joints and they have not developed any play

DID YOU GET THE CODES????????????????

Fuel pressure regulator? Get the codes! It's so easy just turn the key to the ON position, you can even start the engine if you like, and turn that screw on the ECU to diagnostic, count 3 lights, turn the screw back and count the flashes.

Add your own wires.

No idea, I don't have one because I don't have a California model. My best guesses would be either into the EGR valve or into the exhaust manifold.

EGR temp monitor

From my understanding, the EGR solenoid is basically an override to force the EGR system to OFF (by cutting the vacuum between BPT and EGR valves) during certain conditions like idle or high rpm. The BPT valve controls how much the EGR valve opens based on exhaust pressure. According to MY1PATH, that "exhaust pressure" line is actually the intake manifold vacuum. I can't see where that "exhaust pressure" hose goes in the diagrams so I will have to look. Will the manifold vacuum decrease with less back pressure in the exhaust? I already looked at that Wikipedia article but it mentioned nothing on back pressure transducers. Going from a 1.875" OD pipe (stock diameter) to a 2.500" OD pipe is a very big difference in pipe diameter. EDIT 1: OK I checked it out today, the exhaust pressure line on the BPT valve is connected right where the EGR tube is, so it does indeed respond to the back pressure in the exhaust. Also, I noticed that the air filter in the valve was missing. The BPT controls how much the EGR opens based on the intake manifold vacuum, which it receives in the top port and shares with the EGR valve, and the exhaust pressure, which it receives in the bottom port. Basically, if my understanding is correct, the BPT valve uses the exhaust back pressure to modify (or reduce) how much vacuum the EGR valve receives, which determines how much the EGR valve opens. So in a case where there is too much back pressure built up, for example during a high load situation, the BPT valve releases the vacuum to the EGR valve to close or reduce the EGR valve to gain more power. In other words, the BPT valve is there to create a vacuum leak, which is why it should have a filter, to disable the EGR valve for more power. If the BPT valve does not operate properly, for example if the diaphragm is torn or the valve is damaged, it is like having a vacuum leak to the EGR valve, which will cause the EGR valve to never open resulting in no EGR operation. On the contrary, if the BPT valve never opens, from less back pressure for example, it's like the valve does not exist. The BPT valve can be bypassed by disconnecting the small vacuum hose that's on it and plugging it; this is the hose that goes from it to the EGR valve and the override solenoid. Then the EGR valve will be controlled only by the intake manifold vacuum and the override solenoid but I have no idea if that may cause issues at certain speeds and/or loads. EDIT 2: I think to test the EGR operation, I would have to connect a vacuum gauge to the "vacuum signal source" and see how much vacuum there is. If there is at least some vacuum then the EGR is operational and if there isn't any then the EGR system is non-functional. EDIT 3: To disable the EGR valve operation, just yank the little hose going to it and put caps on the EGR valve and the hose. Or you can even pinch the hose off with a clothes-hanger and leave it pinched. To disable the EGR you have to pull the vacuum hose that goes to the top of the solenoid, that's where the manifold vacuum is.

Here are some snippets from the FSM regarding the EGR system:

Alright, thanks for the info. I'm new to the EGR valve concept so I wanted to understand how it works. Would the manifold vacuum decrease with a more free flowing exhaust? I can push up on the diaphragm in the EGR valve and the engine seems to run into a rich flooding condition and starts struggling so I know the valve works. However, the valve will not go up by itself when revving the engine. How can I test that it works when I drive? I was thinking about cutting the EGR out but the ECU may not like that and still run the engine too lean even with O2 sensor compensation. Also, I'm in one of those nanny states that force you to go through emissions testing so I would rather have the EGR work than not.

I have some questions for those who are running performance exhaust systems. When I had a somewhat stock exhaust, I would hear some snapping/ticking sound on acceleration, which was coming from the BPT valve. I don't know if it's supposed to make any noises but it did yet the engine worked fine and there were no codes coming up or anything like that. Actually, that was from an exhaust leak so that's all good now. Now when I switched over to a 2.5" exhaust, which reduced the back pressure significantly, the snapping/ticking sound is no longer there. Does that mean the BPT valve no longer responds to back pressure? If the BPT valve is no longer operational then what happens to the EGR valve? Does it stay open or closed? Would cutting the EGR off be a good solution? Would cutting the EGR make it burn too rich or too lean? I'm trying to figure something out here...

the last place i would use hood pins is in a city anyone looking at those will think FREE BATTERY

cool i'll keep that in mind, it works well right now but when it fails i can use that

lose the rims