Dyno Results..need input

S

stang74

Member

Feb 12, 2004

76

0

6

NV

Sep 13, 2005

#1

• Sep 13, 2005

• #1

I got my car dynoed today and kinda disappointed with the results. Car is an 02 GT 5spd w/ 8k miles

This one's from last year: HP 234....TRQ 274....No AFR was taken

Mods: MRT catted h pipe, Flowmaster 2.5" catback and K&N
Air Filter

Today: HP 242...TRQ 272..AFR: 11.0@ WOT

Same mods as above Plus:O/R H pipe, UDP,T/A(14' deg) ,Plenum spacer and 4:10's..

I only gained 8 HP from the added mod, what gives? and with the AFR of 11.0 is that very rich?....any input is appreciated.

 

csledd

Official Ovary Punching Member

Founding Member

Aug 18, 2001

1,115

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Paducah, KY

Sep 13, 2005

#2

• Sep 13, 2005

• #2

well the gears is suppose to give you a lower reading, that could be good for a few horses

 

9

98laseredgt

New Member

Jul 16, 2004

122

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indianapolis

Sep 14, 2005

#3

• Sep 14, 2005

• #3

11 is pretty rich, probably power to be had there by leaning it out to about 13:1. you can buy a MAF housing for that, or use a tuner i think.

 

J

Joel's98GT

New Member

Jan 3, 2004

368

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central OH

Sep 14, 2005

#4

• Sep 14, 2005

• #4

stang74 said:

I got my car dynoed today and kinda disappointed with the results. Car is an 02 GT 5spd w/ 8k miles

This one's from last year: HP 234....TRQ 274....No AFR was taken

Mods: MRT catted h pipe, Flowmaster 2.5" catback and K&N
Air Filter

Today: HP 242...TRQ 272..AFR: 11.0@ WOT

Same mods as above Plus:O/R H pipe, UDP,T/A(14' deg) ,Plenum spacer and 4:10's..

I only gained 8 HP from the added mod, what gives? and with the AFR of 11.0 is that very rich?....any input is appreciated.

Click to expand...

catted X to the cattless H isn't going to gain much maybe a couple, pullies about 5-7hp, timing is usually about 3-5. plenum spacer about 1, then you lose HP because of your gears, steeper gear = more drivetrain loss.

even though your tires only show a gain of 8hp it doesn't mean that the crank only increased that much though. the gears will show less hp on the rollers but more pull at the track (where it counts)

yes 11.0 is very fat.

 

forpit2000gt

Founding Member

Jun 30, 2002

2,490

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0

Columbia, SC

Sep 14, 2005

#5

• Sep 14, 2005

• #5

you can get a little more at WOT with that AF adjusted. You are not out of line from where you should be. Dyno tune would net the most.

 

mogs01gt

Founding Member

Jul 22, 2002

3,113

30

119

Ohio

Sep 14, 2005

#6

• Sep 14, 2005

• #6

11afr is WAY too rich for a n/a car. That is what high HP turbo and blower cars run at for safty.

 

KronicRacer

Member

Jun 23, 2004

502

1

18

puttering around Ft Lauderdale, FL

Sep 14, 2005

#7

• Sep 14, 2005

• #7

take it to the track if you can and see what times it spits out.