Thread: Budget Build

Its getting all hot and bothered in here. One thing Jun is good for is sparking controversy. This is the busiest I have seen the VVL section get in a long time.

so dynojets are better...hmm so many ppl r gonna be sad after this thread.
i'll use my butt dyno to tell me if i gained any power after i install parts. Im so confused now i dont even wanna bother dynoing my shyt after im done.

Here is the original dyno of 231 WHP




Here is what the dyno should look like with 221 WHP

I'm not trying to add to the confusion in this thread, but since we're on the topic of dynos and accuracy I thought I'd take a moment to explain my feelings on dyno accuracy.
I've heard it said many times that the actual numbers spit out by a dyno are less important than their repeatability. Basically, who cares if it says you make 100 WHP as long as it shows increases and decreases properly?
Well, I care God dammit, and I'll tell you why.

Many items at our disposal (turbos, injectors, etc) have well known HP potential, limits and behavior based on power output. If the dyno says I'm making 310 WHP on a T28 at 15 psi then I know I'm getting to the edge of what this turbo is capable of. I can make an informed decision on my tuning based on this. If the dyno says I'm making 270 WHP on a T28 at 15 psi and that's accurate then it tells me many other things. If it is "just reading low" and I'm really at 310 WHP then I'm pissed off because I can't trust the dyno output and make decisions accordingly.

I'll say this, for me at least, the desire for a corrected dyno is much more than just to accurately compare a dyno across the country. Dyno accuracy is essential for engine tuning. Mountains of information becomes useless without it.

BAM!

^It was like 25 people in here at one point

numbers are for pub talk. its all how the car drives and who is driving it that counts. well done anyway jun

I try man and it's about time.



Only thing I can say is the packs at XX have a built in weather station that automatically feeds into the main comp running the dynapack software. It's hard to PURPOSELY fake out the packs at XX. When I want spongy numbers I'll take it to the Mustang roller. And of course there will be less discrepancy with a huge roller dyno. The packs are waaaay more accurate. You also really have to have an accurate tach signal for the packs so you can synch the dyno proper, as the packs often dont have a tach pickup (why would they need one there is no tire slippage).

Not digging at all man. If you do your research (and you come across as someone trying to learn and do well) there is no doubt you will reach your goals. Please don't take my post as a slight. As far as a new motor, what can they really change? If you think about it, it's all stuff you yourself can do. It just takes time and money. What it comes down to is power is power and there are standard methods to make it.

DING