Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

What is this spike on my Dyno?????

Thread Tools
 
Search this Thread
 
Old 08-06-2004, 04:08 PM
  #1  
TECH Junkie
Thread Starter
iTrader: (12)
 
Ravenous T\A's Avatar
 
Join Date: May 2002
Location: Burleson/Ftw,Texas
Posts: 3,420
Likes: 0
Received 0 Likes on 0 Posts

Question What is this spike on my Dyno?????

Here is the link to my dyno My G5X3 Dyno What is that little spike on the end of each run?
Old 08-06-2004, 04:52 PM
  #2  
10 Second Club
iTrader: (19)
 
offaxis's Avatar
 
Join Date: Jun 2002
Location: L-Town N.Y.
Posts: 2,062
Received 1 Like on 1 Post

Default

Originally Posted by Ravenous T\A
Here is the link to my dyno My G5X3 Dyno What is that little spike on the end of each run?
Sometimes on the dyno when you lift off the gas it makes a spike. I have seen it plenty of times on other dyno sheets. No big deal
Old 08-06-2004, 11:37 PM
  #3  
TECH Junkie
Thread Starter
iTrader: (12)
 
Ravenous T\A's Avatar
 
Join Date: May 2002
Location: Burleson/Ftw,Texas
Posts: 3,420
Likes: 0
Received 0 Likes on 0 Posts

Default

So did my Car really hit 401 or are they pulling my chain? I am happy how fast it feels, just kinda let down on my numbers.
Old 08-07-2004, 01:54 AM
  #4  
TECH Fanatic
iTrader: (1)
 
InsomZ's Avatar
 
Join Date: Aug 2002
Location: Dallas, TX
Posts: 1,733
Likes: 0
Received 0 Likes on 0 Posts

Default

when it spiked it did hit 401 it looks like.. but your average is mid 390rwhp.. but i'm betting ya man the 109 intake temp was making it dyno lower then it would
Old 08-10-2004, 07:18 AM
  #5  
Pathological Modifier
iTrader: (11)
 
Ryan K's Avatar
 
Join Date: Jan 2002
Posts: 3,626
Likes: 0
Received 1 Like on 1 Post

Default

The spike is caused by the Dyno Jet smoothing program. It did not hit 401 HP, looks like its closer to 380-385peak to me.

Ryan K.
Old 08-10-2004, 09:25 AM
  #6  
TECH Junkie
Thread Starter
iTrader: (12)
 
Ravenous T\A's Avatar
 
Join Date: May 2002
Location: Burleson/Ftw,Texas
Posts: 3,420
Likes: 0
Received 0 Likes on 0 Posts

Default

Is it getting Valve Float or is it the tune, everyone else is making more than 400rwhp with this cam. I have all the bolt ons, with LS6 intake. Was this cam degreed in wrong or what?
Old 08-10-2004, 10:28 AM
  #7  
10 Second Club
iTrader: (2)
 
95 Formula's Avatar
 
Join Date: Nov 2001
Location: Baton Rouge
Posts: 1,239
Received 0 Likes on 0 Posts

Default

yea..no 23 hp gain there. Looks more like about 10. Spikes are normal..you just have to exclude them from stated hp numbers.
Old 08-10-2004, 10:29 AM
  #8  
LS1Tech Co-Founder
iTrader: (38)
 
Nine Ball's Avatar
 
Join Date: Nov 2001
Location: Houston, TX
Posts: 32,987
Likes: 0
Received 46 Likes on 19 Posts

Default

doesn't look like valve float. Definitely 401 rwhp on a spike, your actual is around 385-390 rwhp. Spikes happen sometimes when you let off the gas, or a rev-limit is hit. Not a big deal, just don't go around quoting spike peak #s or people will burn you
Old 08-10-2004, 10:38 AM
  #9  
JS
10 Second Club
iTrader: (4)
 
JS's Avatar
 
Join Date: Nov 2001
Location: Delray Beach, Fl.
Posts: 7,303
Received 4 Likes on 4 Posts

Default

10RW over the 224,Sorry I'm not switching mine...
Old 08-10-2004, 12:43 PM
  #10  
TECH Junkie
Thread Starter
iTrader: (12)
 
Ravenous T\A's Avatar
 
Join Date: May 2002
Location: Burleson/Ftw,Texas
Posts: 3,420
Likes: 0
Received 0 Likes on 0 Posts

Default

Weel do U think it could be the tune or the temp in the dyno shop when the tune was conducted?(109 air inlet temp/ 80%humidity that day too) or are my Cats choking it that BAD? Car feel alot faster and pulls like a mother




All times are GMT -5. The time now is 09:25 AM.