Whats With My Dyno Graph!!??

outlwstr · 10-09-2007, 10:42 PM

UPDATE: So I took my car down to Harman Motive yesterday, and let me just say. Ive never been to a shop where ive felt so well taken care of. They are so professional it amazes me everytime im there. Dan kept me up to date on everything he was doing, and i really appreciated that. He found the problem and helped me with what i need to fix it. I might live 3 1/2 hours from there shop but its worth it knowing my car will always be in good hands.

Thanks Dan, im looking forward to my next visit.

I got an 04 wrx. with not that many mods..
vf34
660cc injectors
fuel pump
TBE
Intake
AP.

I got my car tuned at harman motive awhile ago and i was just looking over my dyno graph and was wondering why it looked like this.. why is it so bumpy going up and down like that. doesnt look smooth at all. .. what could cause this. i dont think it was a bad tune cuz harman motive is a very respected and professional shop.

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intercoolerontop · 10-09-2007, 10:51 PM

most dyno graphs look like that, the ones that are completly smooth are usualy smoothed out with the program. your air/fuel is nice as well

outlwstr · 10-09-2007, 11:11 PM

oh well ok thanks. like u said most of the ones ive seen are real smoth so..this kinda threw me off

benw · 10-09-2007, 11:59 PM

looks great to me. How does it drive?

outlwstr · 10-10-2007, 12:36 AM

Quote:

Originally Posted by benw

looks great to me. How does it drive?

honestly drives smooth but feels like im missing 50hp or more when i get on it

socalLGT · 10-10-2007, 01:24 AM

That looks like a very solid tune. All Dynojet graphs have little bumps and dips. Just the nature of the dyno and it's software especially on a stock ECU car. As for the car feeling slower, you are likely just used to the power.

outlwstr · 10-10-2007, 03:24 AM

Quote:

Originally Posted by socalLGT

As for the car feeling slower, you are likely just used to the power.

well idk about that. pretty much stock s2000's and 350z can keep up or beat me. as well as AP stage 1 wrx's

The Blue Pilot · 10-10-2007, 03:37 AM

^^bad driving, or not-so-stock cars you're running up against.

Teylix · 10-10-2007, 03:49 AM

i like it.

same power as my car basically

karl750 · 10-10-2007, 10:06 AM

Quote:

Originally Posted by outlwstr

well idk about that. pretty much stock s2000's and 350z can keep up or beat me. as well as AP stage 1 wrx's

I run a VF30 and have a very similar dyno graph to you. There is no way a 350z or a s2000 could keep up with me. I think it's your driving. Your car's power looks good. Take it to the track, you should trap 103-105 and be around 13 flat all day long.

wrex03 · 10-10-2007, 07:54 PM

Quote:

Originally Posted by outlwstr

well idk about that. pretty much stock s2000's and 350z can keep up or beat me. as well as AP stage 1 wrx's

Get a compression test if this is true. I own a s2000 and it should not be able to keep up with you!

layzienoy · 10-10-2007, 07:59 PM

i agree with the statement that somethings up i drive my dad's S2000 alot and it shouldn't be too much of a challenge.

and for the dyno it seems normal

jaxscuby · 10-11-2007, 08:28 AM

usually after a tune the car's power delivery smooths out
or feels like your going slower. but if you glance down at
the tach & speed, you should see the speed moving faster
than the tach..

SloRice · 10-11-2007, 08:51 AM

Quote:

Originally Posted by jaxscuby

but if you glance down at
the tach & speed, you should see the speed moving faster
than the tach..

WTF??

Oh and by the way....the graph's smoothing is turned all the way up (5). Good thing Harman got rid of their Dynojet and got a real one dyno....Mustang's don't have this problem, even with the smoothing turned off.

gabedude · 10-11-2007, 10:39 AM

Just because one WOT pull shows good numbers it does not mean that the ECU has learned knock at part throttle, exceptional conditions, etc. Everyone should have a way to log their car and see what the tune has become a few weeks after the tune. I don't care what shop it is, every tuner can make mistakes or not account for something. With those numbers, there is no way an S2K should keep up at all.

Gabe

benw · 10-11-2007, 02:15 PM

Quote:

Originally Posted by gabedude

Just because one WOT pull shows good numbers it does not mean that the ECU has learned knock at part throttle, exceptional conditions, etc. Everyone should have a way to log their car and see what the tune has become a few weeks after the tune. I don't care what shop it is, every tuner can make mistakes or not account for something. With those numbers, there is no way an S2K should keep up at all.

Gabe

this is true. non-WOT driveability is impossible to infer from a dyno pull.

capamerica · 10-11-2007, 02:17 PM

spark plugs might be shot. how many miles do you have on your plugs?

outlwstr · 10-11-2007, 06:48 PM

i dont beleive its my driving thats the problem.. ive had other people drive my car with same results of cars keeping up with me when they shouldnt be..

and can someone explain what a compression test is? thanks

and as far as the spark plugs go. ive always thought that maybe they should be changed and maybe that was the problem.. there are 35,000 miles on origanal spark plugs

bren wrx · 10-11-2007, 08:01 PM

needed to be strapped down better.......

B00st3dWRX · 10-11-2007, 08:08 PM

im a stg2 on my TD04 and I blow away 350's or S2k's, hell my dads s2k doesnt stand a chance. Datalogg the sucker!

ryantherobot · 10-11-2007, 08:31 PM

Dan or Jon tune?

Sooby Soldier · 10-11-2007, 08:34 PM

35k on the plugs, check you user manual. WRX spark plugs should be changed every 30k. Speaking of which I need to get myself a set of new plugs... Iridium step 1 colder FTW.

blindfold · 10-11-2007, 10:09 PM

what is your redline, "looks" like it's revving beyond

Kaldar142 · 10-11-2007, 10:38 PM

Quote:

Originally Posted by Sooby Soldier

35k on the plugs, check you user manual. WRX spark plugs should be changed every 30k. Speaking of which I need to get myself a set of new plugs... Iridium step 1 colder FTW.

not to hi-jack or anything, but is there any benefit from getting irdium step 1 colder plugs?

Sooby Soldier · 10-11-2007, 11:52 PM

Quote:

Originally Posted by Kaldar142

not to hi-jack or anything, but is there any benefit from getting irdium step 1 colder plugs?

Check this out, it is off the denso iridium website.

"A good, general rule of thumb is to start with the factory recommended heat range. For every 75 to 100 hp you add to your engine, you may go to the next colder step."

This is why I was recommending it to him in particular because his wrx is running about 75-100 over stock. (I can't remember off the top of my head what a stock wrx would put at the WHEELS.) There is much more info about iridium plugs here http://www.densoiridium.com/faq.php

10-09-2007, 10:42 PM	#1
outlwstr Scooby Specialist Member#: 102201 Join Date: Dec 2005 Chapter/Region: SCIC Location: Cali	Whats With My Dyno Graph!!?? UPDATE: So I took my car down to Harman Motive yesterday, and let me just say. Ive never been to a shop where ive felt so well taken care of. They are so professional it amazes me everytime im there. Dan kept me up to date on everything he was doing, and i really appreciated that. He found the problem and helped me with what i need to fix it. I might live 3 1/2 hours from there shop but its worth it knowing my car will always be in good hands. Thanks Dan, im looking forward to my next visit. I got an 04 wrx. with not that many mods.. vf34 660cc injectors fuel pump TBE Intake AP. I got my car tuned at harman motive awhile ago and i was just looking over my dyno graph and was wondering why it looked like this.. why is it so bumpy going up and down like that. doesnt look smooth at all. .. what could cause this. i dont think it was a bad tune cuz harman motive is a very respected and professional shop. * Registered users of the site do not see these ads. Last edited by outlwstr; 11-09-2007 at 03:58 AM.

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10-09-2007, 10:51 PM	#2
intercoolerontop Scooby Specialist Member#: 72148 Join Date: Oct 2004 Chapter/Region: SWIC Location: PHX, AZ Vehicle: 2010 Ford Raptor RAWR	most dyno graphs look like that, the ones that are completly smooth are usualy smoothed out with the program. your air/fuel is nice as well

10-09-2007, 11:11 PM	#3
outlwstr Scooby Specialist Member#: 102201 Join Date: Dec 2005 Chapter/Region: SCIC Location: Cali	oh well ok thanks. like u said most of the ones ive seen are real smoth so..this kinda threw me off

10-09-2007, 11:59 PM	#4
benw Scooby Specialist Member#: 103320 Join Date: Dec 2005 Location: Oklahoma City Vehicle: 2005 wingless aspen white	looks great to me. How does it drive?

10-10-2007, 01:24 AM	#6
socalLGT Scooby Specialist Member#: 89752 Join Date: Jun 2005 Chapter/Region: SCIC Location: On the dyno at Yimi Sport Vehicle: 08 STI SWP	That looks like a very solid tune. All Dynojet graphs have little bumps and dips. Just the nature of the dyno and it's software especially on a stock ECU car. As for the car feeling slower, you are likely just used to the power.

10-10-2007, 03:37 AM	#8
The Blue Pilot Scooby Specialist Member#: 101880 Join Date: Dec 2005 Chapter/Region: SCIC Location: 2 Freeway Vehicle: 2012 Mustang GT	^^bad driving, or not-so-stock cars you're running up against.

10-10-2007, 03:49 AM	#9
Teylix Scooby Newbie Member#: 151982 Join Date: Jun 2007 Chapter/Region: MWSOC Location: Aurora, IL Vehicle: 2006 Tiburon Orange Crush	i like it. same power as my car basically

10-10-2007, 07:59 PM	#12
layzienoy Scooby Newbie Member#: 91505 Join Date: Jul 2005 Chapter/Region: South East Location: florida	i agree with the statement that somethings up i drive my dad's S2000 alot and it shouldn't be too much of a challenge. and for the dyno it seems normal

10-11-2007, 08:28 AM	#13
jaxscuby n00b Moderator Moderator Member#: 10613 Join Date: Sep 2001 Chapter/Region: South East Location: F L O R I D A Vehicle: 2002 USDM WRX WRB	usually after a tune the car's power delivery smooths out or feels like your going slower. but if you glance down at the tach & speed, you should see the speed moving faster than the tach..

10-11-2007, 10:39 AM	#15
gabedude Scooby Guru Member#: 10108 Join Date: Sep 2001 Chapter/Region: TXIC Location: LCP / N Austin TX Vehicle: 07 STI 25G build in progress	Just because one WOT pull shows good numbers it does not mean that the ECU has learned knock at part throttle, exceptional conditions, etc. Everyone should have a way to log their car and see what the tune has become a few weeks after the tune. I don't care what shop it is, every tuner can make mistakes or not account for something. With those numbers, there is no way an S2K should keep up at all. Gabe

10-11-2007, 02:17 PM	#17
capamerica Scooby Newbie Member#: 105056 Join Date: Jan 2006 Chapter/Region: South East Location: MIAMI, FL Vehicle: 2005 WRX WR BLUE	spark plugs might be shot. how many miles do you have on your plugs?

10-11-2007, 06:48 PM	#18
outlwstr Scooby Specialist Member#: 102201 Join Date: Dec 2005 Chapter/Region: SCIC Location: Cali	i dont beleive its my driving thats the problem.. ive had other people drive my car with same results of cars keeping up with me when they shouldnt be.. and can someone explain what a compression test is? thanks and as far as the spark plugs go. ive always thought that maybe they should be changed and maybe that was the problem.. there are 35,000 miles on origanal spark plugs

10-11-2007, 08:01 PM	#19
bren wrx Scooby Guru Member#: 59454 Join Date: Apr 2004 Chapter/Region: NESIC Location: Worcester Vehicle: '10 E92 M3 M-DCT brentuning.com/blog	needed to be strapped down better.......

10-11-2007, 08:08 PM	#20
B00st3dWRX * Banned * Member#: 140978 Join Date: Feb 2007 Chapter/Region: SCIC Location: L.A., Ca and B-ham, WA Vehicle: 02 WRX WRB i-Nertia Dynamics	im a stg2 on my TD04 and I blow away 350's or S2k's, hell my dads s2k doesnt stand a chance. Datalogg the sucker!

10-11-2007, 08:31 PM	#21
ryantherobot Scooby Specialist Member#: 129692 Join Date: Oct 2006 Chapter/Region: SCIC Location: The OC. Vehicle: 2011 WRX Sedan Obsidian Black Swirl	Dan or Jon tune?

10-11-2007, 08:34 PM	#22
Sooby Soldier Scooby Newbie Member#: 146968 Join Date: Apr 2007 Chapter/Region: SWIC Location: Flagstaff, AZ Vehicle: 2005 WRX Crystal Gray Metallic	35k on the plugs, check you user manual. WRX spark plugs should be changed every 30k. Speaking of which I need to get myself a set of new plugs... Iridium step 1 colder FTW.

10-11-2007, 10:09 PM	#23
blindfold Scooby Newbie Member#: 124366 Join Date: Aug 2006 Vehicle: '04 STi WRB	what is your redline, "looks" like it's revving beyond