decibel apps

[dbv8]

My Chimaera is now fully decatted and has a semi-sleeved box so we tried out an iphone app reading about a metre away at 45 degrees off the corner of the car.
I got 104.8

Are these apps accurate?

[haircutmike]

Derek.

Alex(daredevilz) did his the other day, got about 98 iirc on his standard system but fully decat.

[Alexdaredevilz]

haircutmike said:

Derek.

Alex(daredevilz) did his the other day, got about 98 iirc on his standard system but fully decat.

That's because my engine is smoother than a babys bottom (up for sale btw)

Also I found my car seems to get quieter from 2.5k-4k rpm


Edit- no cats but silencer in place

Edited by Alexdaredevilz on Tuesday 21st June 15:25

[LordGrover]

With twin exhausts most circuits will test in the middle, not at 45°.

[haircutmike]

LordGrover said:

With twin exhausts most circuits will test in the middle, not at 45°.

They should but often don't.

[mrmr96]

The iPhone app maxes out at 105db's.

[spercy]

mrmr96 said:

The iPhone app maxes out at 105db's.

Nokia app maxes at 100db's, and i hope it is very inaccurate because it was maxed on tick over!!!!

[AutoAndy]

dbv8 said:

My Chimaera is now fully decatted and has a semi-sleeved box so we tried out an iphone app reading about a metre away at 45 degrees off the corner of the car.
I got 104.8

Are these apps accurate?

Which app did you use? It would be interesting to try it at S-club this weekend

[GlennT]

Sorry for going O/T. But Alex why are you selling the Chim?

[Alexdaredevilz]

GlennT said:

Sorry for going O/T. But Alex why are you selling the Chim?

Just the engine, I got a plan

[haircutmike]

Alexdaredevilz said:

Just the engine, I got a plan

You got a plane, but you haven't a pilots license?

[Alexdaredevilz]

haircutmike said:

You got a plane, but you haven't a pilots license?

Whos going to catch me when im flying?

[biper]

Alexdaredevilz said:

Just the engine, I got a plan

Is this the cunning plan you mentioned at Goodwood.

[Alexdaredevilz]

biper said:

Is this the cunning plan you mentioned at Goodwood.

Similar

[Gazzab]

My SPL Iphone app goes up to 120db afaik. It needs to be calibrated to ensure it is accurate though.

[haircutmike]

I have a phone, it makes calls aaaaaaaaaaand receives them!

[macdeb]

Why the fk was this moved, could've been handy for a track day novice with loud pipes????
I would never look on computer gadget nerdy fkin' page!

[grahamw48]

Presumably you guys are testing at two thirds maximum revs ?

[mrmr96]

Gazzab said:

My SPL Iphone app goes up to 120db afaik. It needs to be calibrated to ensure it is accurate though.

Could you check? I'd be both surprised and interested if that was true. Mine's an iPhone 3G and definitely only goes to 105db. Do you have a later phone with a better mic?

[Gazzab]

mrmr96 said:

Could you check? I'd be both surprised and interested if that was true. Mine's an iPhone 3G and definitely only goes to 105db. Do you have a later phone with a better mic?

I don't know how to check without shouting at it...! It has a range adjustment that goes to 120.