350Z Dyno'ed NOW WITH RESULTS SHEETS

[neodc]

Hey, just had mine dynoed and didnt get as much hp as i wanted, what do you guys think ..

 

this is at the wheels

 

hp - 219

Touque - 196

 

 

thanks

 

dave

[3FIDDYZ]

Type of Dyno?

Where?

Also not a great day for a dyno, warm and not much air...

You got your results to post?

[tmJak]

Any mods at all or stock? Would have thought 219whp would be around 280bhp? Sounds right for stock I think.

 

What model 350z?

[neodc]

It was at a place near Sleaford, I have the results to post but not near my of at the min, was a warm day and they didn't put a massive fan infront which I was a bit disapponted with. I don't know what machine they used to test it

[neodc]

mods. Are jwt induction and 5zigen exhaust .

[3FIDDYZ]

219 at the wheels should give you about 250 at the crank. Get a plenum spacer and that may give you a bit more torque... Numbers are quite low though...

[neodc]

umm, that's a bit poor, I think it pulls really well, sits aside another 350 on motorway . Do u think it was just a bad run ? Could it have set up wrong ?

[3FIDDYZ]

What numbers are you basing what it should be on?

 

Oh and another Zed on the motorway isnt going to show anything... They may not be gunning it!! 2 Zeds at a dyno will show up the numbers better....

[Ekona]

It was at a place near Sleaford, I have the results to post but not near my of at the min, was a warm day and they didn't put a massive fan infront which I was a bit disapponted with. I don't know what machine they used to test it

No fan? That's just poor and very amateurish, and I certainly wouldn't go back there again. Name and shame methinks.

 

There's nothing you can do to set your car up any better for a dyno other than the obvious i.e. make sure all your fluids are correct and... *lightbulb on* wait, you didn't have the air-con on, did you? That'd kill some power from the parasitic loss.

[Guest prescience]

It was at a place near Sleaford, I have the results to post but not near my of at the min, was a warm day and they didn't put a massive fan infront which I was a bit disapponted with. I don't know what machine they used to test it

Results are low but not too amazingly low to be dismissed.

 

If you don't know ........ who else does? Hopefully you didn't pay good money simply for the dyno operators to give their drums a workout. And if you did, go back and get what you paid for - no excuses

[Chris`I]

*lightbulb on* wait, you didn't have the air-con on, did you? That'd kill some power from the parasitic loss.

I beleive under full throttle the air con is automatically shut off so not to hamper performance

[Ekona]

Really? Interesting. I'm not sure if I'd consider that to be a good thing or not really, as Id' like to think that, despite all the electronic gadgetry in the car, I still have some control over the little things like if I want the a/c on or not.

 

Just a thought, but if the TPS is slightly off and only seeing the throttle open 95% under WOT, would it still shut the a/c off?

[neodc]

this afternoon i'll scan my sheets in, the true one is the hp at the wheels as the fly is calculated..

[neodc]

 

 

there they are.

[Ekona]

Graphs look okay, what gear were the runs done in? Was that the only run they did, or did they do a couple and see which was best?

 

I would imagine the lack of power is down to zero airflow as they put no fan at the front, as the lines look fine.

[neodc]

it was done in 4th gear, am i about 20hp short of expected ? the front of the car was in a closed area with no airflow.

[Chris`I]

it was done in 4th gear, am i about 20hp short of expected ? the front of the car was in a closed area with no airflow.

Was the bonnet at least up? That is a bit poor as it does restrict airflow if the bonnect is down and there is no fan.

 

Also, not heard of a DYNOmite dyno before, might be worth doing a bit of googling and see if they tend to over or under read compared to others. Dyno Dyamics are what most people get them tested on, they seem to be the most consistent.

[neodc]

bonnet was up, i'll look into dyno

[bobby]

with popcharger and plenum spacer on 98ron fuel...i got 244@wheels with dynapack and 223lb/ft torque.

 

the best way to measure is at the wheels...the dynapack system attached to the rear hubs and measures the performance....i had mine done at TDI @ thurrock??

 

you are looking at about 12-16% loss approx from crank power to wheels on the 350z.

 

loss% was estimated from readings of more than 8 different cars at the dyno day and it was standard across the models (276,300,313).

[Chris`I]

with popcharger and plenum spacer on 98ron fuel...i got 244@wheels with dynapack and 223lb/ft torque.

 

the best way to measure is at the wheels...the dynapack system attached to the rear hubs and measures the performance....i had mine done at TDI @ thurrock??

 

you are looking at about 12-16% loss approx from crank power to wheels on the 350z.

 

loss% was estimated from readings of more than 8 different cars at the dyno day and it was standard across the models (276,300,313).

That sounds more like it. TDi are a very reputable company too

[neodc]

thanks for the reassureance guys, i'll get it done again another time.

[Dan]

Just thought I would chip in, not an expert on 350z but on many cars aftermarket induction kits actually cost you power, especially the type that terminate in an exposed intake filter just lying around under the bonnet drawing hot air. They are less efficient than the manufacturers standard air box. Just something to think about.

[ersen.o]

yup dan is right, my popcharger lost me power, wne the guy pulled it out of the bonnet, it gained 10bhp back str8

[p1tse]

yup dan is right, my popcharger lost me power, wne the guy pulled it out of the bonnet, it gained 10bhp back str8

 

wow, that's not what i expected to hear.

i wonder in the real world of normal roads, if it looses power too?

[ersen.o]

not sure if that metal plate stops ALL of the hot air, i put my hard down near the left of it and it was like a hairdryer! maybe its my car tho, u never no!