The chart is more important than the max...

 

As long as your curve is smooth and A/F is right, your max numbers mean nothing. Final numbers are nothing but bragging rights. Numbers vary greatly depending on car and dyno and it's not wise to compare to other people's.

 

I can def agree with that, the only thing the im really in doubt about is having only 9 psi with a si impellar and a 2.87 pulley. I have not seen anyone with such low psi or numbers from this combo.

 

it was also on a low reading dyno dynamics wich makes me feel somewhat better. and i agree 9 psi for 4-450 whp is good but there is more in her

 

correction found out today its a dyno jet

 

here is chart

 

Dynojets always give the highest numbers, they are inflation machines. But again, numbers dont really matter much as long as your A/F curve is correct.

 

^You mean Dynopacks? Hub dynes read high

 

No I meant dynojet. No one ever discusses dynopacks, because chassis dynos are rarely ever used. Roll on dynos are pretty much all you ever see in the states.

Dynojets notoriously gives the highest numbers. Mustang typically read 7-8% lower and dyno dynamics typically read 10-12% lower and are referred to as heart breakers. Dynojets own marketing in the mid-90's specifically used the larger output numbers as a selling item. Shops want to give customers the highest numbers possible, so many bought dynojet and it kinda became the standard.

About 4-5 years ago a guy with a modified 325i ran a test and had his car dynoed on 4 different types of dynos all on the same day.

 

so check this out, i was checking my order to see if i everythign was ok . i noticed the charger had a sci stamp although i purchased a si. so long story short, vortech sent me the wrong charger. taking it off next week and sending it back. not sure how soon ill have the dyno done but im hoping for atleast 60whp. vortech said ill gain 4 psi

 

charger wasw sent out yesterday waiting on my new charger then hustle for a dyno day

 

charger left cali yesterday, dyno day is scheduled for aug 25.

 

all that money spent building your engine and that's all you got from an upgraded blower? wow. I've seen same numbers on stock gz with a vortech kit. and Hub dynos are great for tuning. sure the peak hp and tq will be higher but that's not the goal. they read at the hubs accurately and tune from there. if you ask me it's the best tuning method available

 

why do people think dynopacks read "higher" when it's more likely that the mustang dynos read inaccurately lower..

 

You might want to re read.