I'm not that impressed with the #'s. My car made 284 rwhp with Lt's, a crape home made Y pipe, flowmaster catback and a k&N intake...oh and that is thru a slipping auto... it started at 12.1 and finished at 11.8. So there was a lot left in it that setup.

just my thoughts

 

HOLY SHIAT! I have the mid length MACs sitting in my garage waiting for installation, below are my numbers from the setup I run now!

(cut out open)

 

Just to respond quickly.

1) It doesn't matter if your Y-pipe is made like crap or not. If it flows well, that's what matters
2) You have no cat in your system. I do, and it's probably robbing me or 5+ HP
3) Your A/F is the same as mine in the upper RPM's where my peak HP number was made, so we are even there

You have an auto, which robs you of at least 10 HP more than me, so lets say my max HP number was 274 to compare to you, then add at least 5 back because I don't have a cat and I'm at about 279 HP to your 284. 5 HP difference

It's all a numbers game though. By the way, what was your TQ? Your car accelerates according to the TQ curve, not HP. When I'm looking at dyno curves, I only look at the TQ curve. It gives a better idea of how a car is going to accelerate. Over the entire RPM range of 1800-5700 rpm, I averaged a gain of 33+ ft lbs of TQ.

Dan

 

You numbers are already great for only having a CAI and cutout. I haven't seen numbers that high with only those mods. Were they SAE or STD dyno numbers?

Good luck with the install.

Dan

 

In reality who cares about hp numbers. They mean nothing. It comes down to putting the power down to the ground. BTW my car made 292 rwhp and 330 rwtq on the dyno with Mac headers, AFPR and Flowmaster catback exhaust.

 

SAE corrected I think? I'd have to find those sheets, but would you mind explaining the difference?

 

Great numbers!!

330 rwtq! That's what a lot of Hotcam guys put down, WITH headers. Of coarse it's at a higher RPM where it's used more in the 1/4 mile, but still, TQ is TQ and it must put you back in the seat pretty good.

I'm in total agreement with you on the TQ issue. One of the reasons I'm so happy with my car right now. Daily driving is so fun now that I have all the extra TQ available down low. In the very low RPM's my TQ increased 40 ft-lbs. I can step on it almost anywhere in my RPM band and be put back in my seat pretty good.

Dan

 

SAE numbers are corrected to a defined set of climate conditions. They adjust the STD dyno numbers to SAE conditions so that if you dyno at 60 degrees one day, and 90 degrees another day, you can still compare dyno numbers. STD numbers are not adjusted at all and are only a reflection of what you ran THAT DAY in THOSE CLIMATE conditions.

BTW, SAE numbers are typically lower than STD numbers. I dynoed on a cool day so they were almost identical. (1.01 correction factor)

Dan

 

Ahh cool, I found the sheet and it has SAE torque and SAE Horsepower.

The dyno where I got tested was about 3000-3500 above sea level.

You got me anxious now!!

 

Most dynos are SAE corrected.

 

True, but my first run at Hardcore motorsports was STD. I had to tell the operator to switch it to SAE. He said, "O.k. we'll dyno the rest of the guys at SAE."

I've seen enough STD charts on this site to warrent me asking the question, just so I know I am comparing apples to apples.

Dan

 

Those are great #'s man without headers. But i also put down 281.5rwhp and 308rwtq SAE corrected with just a catback, CAI, and LT4km. Then with my LT's and cutout open i only put down 283rwhp and 319rwtp SAE corrected. The car feels a lot stronger. I am running very rich which is why my current #'s are so low but also i dyno'ed my car on 2 different dyno's. So one of them might dyno a bit higher then other dyno's.