AFM porting blows...

[turbodan]

Alright, lets review:
This is where I assert that your car is stock:

I've asked in another thread, how you & Jeremy propose to tune an AFM for ideal afr's. Jeremy said it was a super easy thing to do, after popping off the plastic cover, & you are drilling holes in the flapper door.

Back the bus up. You have a stock M30B35. Stock injectors, cam and intake. Tuning this engine is clearly different than tuning a 2.7l M20 using a 2.5l ECU, 62% larger injectors than stock and a rising rate FPR. 62% more fuel is a lot more than you can account for with spring tension, hence the hole in the flapper and AFM porting. Even then, you dont want to adjust all of it out, as that would defeat the entire purpose of installing them in the first place. The idea is to add fuel at only a few specific point in the range. Only where you need it.

Especially with a WBO2, it would be easy to adjust the spring tension and slightly reshape the inner curve of the AFM to get what you're looking for. Thats if you wanted to modify the AFM just to slightly change your AFR on a stock engine. That seems silly to me. Especially since a healthy AFM with a basic performance chip does the same job.

Here we have you going off because you seem to claim you installed the MAF because your car is modified:

.. You have a stock M30B35. Stock injectors, cam and intake..

I did the maf and then the map because I like tuning my 535 with a 284 cam, 21lb injectors, & at one time, RD long tube headers.
Are we going to hear any more horsecrap about your confusion on why I removed my afm?

And here you mention that it was stock when you installed the MAF:

The posted dyno sheet wasn't with the 284 cam, injectors, or headers; they came later.

Does that make sense to you? Then what was all this about?

.. You have a stock M30B35. Stock injectors, cam and intake..

I did the maf and then the map because I like tuning my 535 with a 284 cam, 21lb injectors, & at one time, RD long tube headers.
Are we going to hear any more horsecrap about your confusion on why I removed my afm?

Most specifically the sentence where you say:

.. You have a stock M30B35. Stock injectors, cam and intake..

I did the maf and then the map because I like tuning my 535 with a 284 cam, 21lb injectors, & at one time, RD long tube headers.

If all of this came after the MAF and the dyno where you claim your gains, what the hell does it have to do with anything?

[Martin in BellevueWA]

Are you mentally handicapped?

Still living with the parents?

[turbodan]

You are insane

[Jeremy]

Martin, he's not the only one it doesn't make sense to. You have a tendency to leave out details.

If your claim that you installed the MAF to facilitate tuning of your non-stock setup (the quotes Dan used over and over again) is true, then why did you install it and spend timing tuning it on a stock motor? In theory, a stock motor should require no special tuning to run properly unless there is some problem with it. If that's the case, then the tuning is merely masking the problem and not addressing the issue.

Admittedly, loosening the AFM a few notches on a high mileage m30 is exactly that, masking the problem. But it works, and is much easier than replacing all the damn seals.

Basically, what Dan is saying is that your statements and reasoning concerning your MAF conversion seem to be a bit contradictory. I can't really follow it myself. Why did you need the tunability you say you installed it for on a stock motor? Planning in advance? If you didn't even attempt to tune using the AFM, how can you be so confident in saying it's impossible?

Jeremy

[Martin in BellevueWA]

If your claim that you installed the MAF to facilitate tuning of your non-stock setup (the quotes Dan used over and over again) is true, then why did you install it and spend timing tuning it on a stock motor? In theory, a stock motor should require no special tuning to run properly unless there is some problem with it. If that's the case, then the tuning is merely masking the problem and not addressing the issue.

I installed a maf because I liked the idea of tuning things a bit, and anticipated the various other mods that I later made to the same car. I gave my afm to Pat, in Seattle for his e28. He needed it as his original afm died. There were no obvious running problems with my car before the maf kit.

Since that posted dyno sheet, I've made other mods.

I installed the maf because I wanted to. I bought into the hype & others' success with the same maf. Did I waste my money buysing a wideband o2 sensor too? I don't think so. All of my mods combined are much less than the costs of my other cars. I like my oldest car the most, the 535. I put 1,200 miles on it last week driving to Catalina Island with my kids.
Sorry if I can afford to spend a few bucks on my car to have fun, it generally keeps me out of the bars.

[turbodan]

Sorry if I can afford to spend a few bucks on my car to have fun, it generally keeps me out of the bars.

What are you trying to say?