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(1) How much horsepower are headers and a tune picking up on an otherwise unmodified engine? Has anybody seen the results of this yet? The headers should pick up some, and the tune should pick up some, but how much in the real world? (2) If you live in an area with emissions, not California...

In your opinion is the 3.625" pulley safe for 93 octane?

Is there any downside to the 120mm throttle body?

Don't do that.

If you ever track the car you will appreciate that extra "room" in the pedal which gives you a lot more control over the throttle when at speed and trying to maximize your acceleration from turns. "Ramping up faster" means less control over the car on the track at part throttle.

How odd. Baffling, even. That has literally never happened to me. Why would somebody tailgate or cut you off because of not racing? What do you do when they tail gate? Can't you just put on your turn signal, wait until it flashes three times, and then cautiously change lanes to the right to...

It is a png file, if that makes a difference for you.

LOL, not sure what to say. I can still see it.

MS109, $24.40 per gallon - does anybody do that?

So he remarks about 9:23 - 9:24 that he changed cam timing. I was wondering about whether tuners do that.

Post #44 is still there, just as it was.

WOW, I cannot believe somebody knew exactly what I was wondering about! :like:

In all seriousness, in this age of social media, not many folks are going to buy from a tuner when the reviews are all like, "Hey, be aware, I downloaded the tune from MadMan Tuning Solutions, and now my crankshaft is in five pieces all over the road!" Forum user #2 - "Me, too! Except mine is...

There have been a lot of developments in other things, too, like cylinder head design. Our stock 4 valve 5.0 heads flow far more than a dedicated racing head for a 302 back in the 60s. The same goes for stock LS heads today v. the old muscle car cylinder heads.

Which would never be that good to drive to the grocery store. Magneride does both. Which is the point you were making, I think::

Thanks for sharing the timing, though. 27 degrees It shows how much more efficient modern engines are. My old Pontiac, back when Pontiacs were a separate engine family, required 34 degrees to run at its best.

And then promptly dial it right back out when you give it more than half throttle . . .

I wonder how much timing can really be advanced over what was set by the factory? The biggest gain I have seen yet (that I find somewhat credible) is approximately 50 horsepower on E85, which is significant. I wonder how many degrees of timing were added to get that number, and I wonder...

Right, because the ecu is pulling timing in certain conditions, but with E30, it does not have to. In comparison, then, the ECU is advancing timing during those conditions when E30 is used, when it would not if 93 octane were being used. I think you are both saying the same thing but still...