12, 13, and 14 are low numbers and come first because your car will stop running if you don't deal with them. Forget about the symptom of the MIL and when it turns on at this time. Those are order of importance.
The vast majority are making work for themselves with no gains with the FFIM. Meaning most that converted because they think it looks good and they can't change spark plugs. Pull the stock unit and send it in in for abrasive media hone and polish. If Extrude Hone can make a piece of shit stock...
The day the aftermarket manufactures a head for the 7M and it is a modern alloy and with a little bit thicker deck is the day I buy an aftermarket head. It only needs to flow a little bit better.
Does your car have the sport roof option? It is noted that the originals, even 91-92 don't have the sound of something new. However, many of the originals were ruined by cranking up the volume to the limit because people drive at highway speed with the roof off. And it drowns out Van Halen.
This doesn't apply to us, but GM used really good simulation software to design the LSX heads. They knew how good they were going to be. It was the improvement in the software and computing power. For the rest of us, that is why we have a flow bench.
I wasn't bashing you. But you did say this;
My mistake if I misunderstood you were not saying what is demonstrably wrong and shown for more than a decade.
Maybe they get this phony EGR information from you. :biglaugh:
Take a look inside the plenum some time. If it only flowed into cylinder 6 and 5 then it would not do its job.
Be sure to ignore large portions of their "tech". As if there isn't enough problems in the automotive world, how in the hell is he an instructor of the year?
14.7:1 is not a description of volumetric efficiency, nor is it a desirable air to fuel ratio by weight of a supercharged engine. Good...
I don't know when the non-sense about EGR started. I read about it at Mark Tozer's forum back at the start of the new millennium. EGR causes detonation, EGR causes BHGs. I am not sure where they get that stuff from. Maybe it was the old SOGI mailing list. I just don't know. EGR flows to all the...
A front facing intake manifold gains you nothing. If anything, it limits airflow to the rear cylinders in a small way. Unlike EGR which is routed to the middle. I think many don't know that when they say (wrongly on multiple points) that EGR causes the headgasket problem because the rear gets...
The owners manual (which is never read) correctly states that repeated boost pressures above 8 psi will cause serious engine damage. Continuous being the key word.
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