dyno day - Motorgen - Automotive Events, Meets, Cruises and Forums

big_G · 04-23-2009, 07:45 PM

Maybe 10 pulls netted best numbers to date..even though this run sports a much smaller cam.....was 242/248/110* v. new cam 230/236/114*. Me thinks I went too small, leaving some on the table. This winter I will try a 242/248/112* or similar.

Vettezuki · 04-23-2009, 07:52 PM

That is pretty baller, congrats. You said something in another post about Fuel Injection making quite a difference over the Carb. Did I understand that right? Is it just a feel/smoothness thing, or is it a quantifiable, all things equal, FI gives better numbers with your application kind of thing?

big_G · 04-23-2009, 08:14 PM

The fuel injection, I feel, was a big contributor to the gains i realized today. Prior numbers with the big cam and carburetor were 540 rwtq/535 rwhp. No other changes to the engine were made. The biggest improvement I noticed was better low-end throttle response.

Vettezuki · 04-23-2009, 08:23 PM

Quote:

Originally Posted by big_G

The fuel injection, I feel, was a big contributor to the gains i realized today. Prior numbers with the big cam and carburetor were 540 rwtq/535 rwhp. No other changes to the engine were made. The biggest improvement I noticed was better low-end throttle response.

What FI setup are you using?

Madmax305 · 04-23-2009, 08:28 PM

Good numbers...I agree, FI will get you bigger numbers and better mileage as well. FI has more variables to tune over the traditional carb set up.

big_G · 04-23-2009, 08:31 PM

Quote:

Originally Posted by Vettezuki

What FI setup are you using?

FAST XFI

Side note...I picked up 40 rwhp by removing the s/c'er inlet piping and K/N air filter. The dyno operator/tuner suggested it.

Vettezuki · 04-23-2009, 08:39 PM

Quote:

Originally Posted by big_G

FAST XFI

Side note...I picked up 40 rwhp by removing the s/c'er inlet piping and K/N air filter. The dyno operator/tuner suggested it.

Why FAST? Did you consider any other systems, like BigStuff?

big_G · 04-23-2009, 08:47 PM

Quote:

Originally Posted by Vettezuki

Why FAST? Did you consider any other systems, like BigStuff?

Looked at Accel gen VII, Fast and a little at bigstuff. I have a good relationship with a local Comp. Cams dealer, and FAST is a division of Comp. Cams. If I had any problems, they would be addressed. FAST had the features I wanted that Accel didn't, for only a few hundred more.

SeanPlunk · 04-23-2009, 10:18 PM

Fantastic numbers, congrats

big_G · 04-24-2009, 08:32 AM

Quote:

Originally Posted by SeanPlunk

Fantastic numbers, congrats

Thanks....I was hoping for 600rwhp....I think with a cam upgrade I'm there. In a funny way not making 600 is probably saving my stock block from turning into iron salad.

I flat-lined my 2 bar map sensor for the last 500 rpm....

BTW...a late model Mustang wanted to play on the way home last night....but I think he spied my ProCharger license plate frame and mellowed out...I need to remove it.