How to increase throttle response?

[z31maniac]

Sorry, not really backing my theory, as I'm not well versed on this - more so just asking why.

The custom tune sounds like it would be worth the money. I'll have to try to find someone reputable around here.

A custom tune is always the way to go, but you saw the relatively small gains to be had on a stock motor. Personally I'd live with and either go stand alone on a M20 build or go 24v.

[Moto-Mucci]

No I know, I can see that they're measuring from the greatest points of deviation. I was referring to the fact the deviation between the peak of before and after is much greater then 1.5hp in the Miller graph - since someone was referencing the MarkD chip as only giving you a 1.5 peak hp increase.

...but this is just going to go full circle to the "different dyno's, different motors" argument.

[Dillinger]

You seem determined to convince yourself it's worth the money, so go ahead and buy it. Then dyno test it back to back at the same place, same day.

Otherwise your "butt dyno" will tell you it did something so you can justify your purchase.

It is cheaper than a reman bosch afm.

[nando]

exactly what we were trying to tell you, the quoted HP gain is not at the PEAK hp, it's at the point in the graph where the HP increase is biggest. So it may be +20hp, but it's not 168hp + 20hp = 188hp.

[Moto-Mucci]

You seem determined to convince yourself it's worth the money, so go ahead and buy it. Then dyno test it back to back at the same place, same day.

Otherwise your "butt dyno" will tell you it did something so you can justify your purchase.

Sorry, not really backing my theory, as I'm not well versed on this - more so just asking why.

The custom tune sounds like it would be worth the money. I'll have to try to find someone reputable around here.

[z31maniac]

You seem determined to convince yourself it's worth the money, so go ahead and buy it. Then dyno test it back to back at the same place, same day.

Otherwise your "butt dyno" will tell you it did something so you can justify your purchase.

[Moto-Mucci]

I know we've been talking about botched numbers - but look at the Miller graphs:

http://www.millerperformancecars.com...III%202.5L.pdf

Even if those numbers are botched a bit (and not measuring from the peaks) - there is a significant difference in the peak numbers when comparing before to after.

The graphs look much different from that link.

[Dillinger]

So the gist of it all is that the numbers are just that - numbers.

[z31maniac]

http://www.r3vlimited.com/board/showthread.php?t=126893

[nando]

or at least, misunderstood. The mark D chip may infact give you a 15hp gain, but it's not neccesarily at the peak, and the actual WHP increase will be less.

[z31maniac]

Go look for his thread, e30_fiend.

The point is that all these gains are greatly exaggerated.

[Moto-Mucci]

Guess you didn't read Taylor's thread either. The MarkD chip is widely considered the best M20 chip on the market, I believe it made around 1.5HP more peak HP than a stock chip.

Is that a type-o? 1.5hp peak gain from stock?

Please explain.

I understand comparing the peak power points from both graphs - but if one has more power for longer leading up to the peak number, does that not = faster car?

[guibo09]

also, often those are peak HP gains, but not neccesarily the gain at the HP peak. so it could be +10hp somewhere in the RPM range, but only 2hp at the peak. Then you get into whp vs bhp and the correction factors for different drivetrains which adds a whole new layer of confusion that marketers can use to sell you their product.

`

+1. this is the biggest cheating method. marketing just chooses the one rpm where their product produces the best gain.

this is some people get 100hp out of a few mods: yeah my p-flow adds 32hp, my exhaust adds 23, my headers add 15, my lw pulley 10, etc etc

[Liam]

also, often those are peak HP gains, but not neccesarily the gain at the HP peak. so it could be +10hp somewhere in the RPM range, but only 2hp at the peak. Then you get into whp vs bhp and the correction factors for different drivetrains which adds a whole new layer of confusion that marketers can use to sell you their product.

Even the OEMs like to shuffle these numbers around.

The Japanese were famous for it. In the circles I was running in back in the 80's it was a running joke.

[nando]

also, often those are peak HP gains, but not neccesarily the gain at the HP peak. so it could be +10hp somewhere in the RPM range, but only 2hp at the peak. Then you get into whp vs bhp and the correction factors for different drivetrains which adds a whole new layer of confusion that marketers can use to sell you their product.