• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 KIA Stinger Forum and KIA Stinger community dedicated to KIA Stinger owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the KIA Stinger Forum today!

3.3 Stinger power development

Messages
97
Reactions
78
State
Non-US
Country
Australia
#1
Hey guys, thought would be the first poster here lol. So with 1000km clocked up on our Stinger we hit the rollers this morning to do base power and afr measurements. The Stinger realed of 233rwkw and afrs were quite on the safe side at mid 11:1. We will begin with development and testing of our cai system with a dual 3" cat back exhaust and hit the rollers again to check power and afrs. Will post more as we progress :)
 

Attachments

Messages
371
Reactions
47
State
NY
Country
United States
#2
That's great! Thanks! I know rwkw is rear wheel kilowatts but what is afrs and what is 11:1?
 
OP
J
Messages
97
Reactions
78
State
Non-US
Country
Australia
Thread Starter #3
That's great! Thanks! I know rwkw is rear wheel kilowatts but what is afrs and what is 11:1?
Ok so afr is air fuel ratio. It didnt get any leaner than 11.5:1 dropping down to mid 10s at upper end of pull. Quite safe :)
 
Messages
371
Reactions
47
State
NY
Country
United States
#4
Ok so afr is air fuel ratio. It didnt get any leaner than 11.5:1 dropping down to mid 10s at upper end of pull. Quite safe :)
Thanks Jonnytig! Now I see:) That's on the rich side isn't it as the whole stoichiometric thing is about 14.7:1? Maybe 14.7 is for max economy and you want richer for max power to help keep things a little cooler?
 

Kale808

Active Member
Messages
566
Reactions
53
State
HI
Country
United States
#5
I hit the subscribed button so fast my mouse button over heated. [giddy]

Going to be following this very closely.
 
OP
J
Messages
97
Reactions
78
State
Non-US
Country
Australia
Thread Starter #6
Yup 14.7 is stoichiometric but we dont want to go anywhere near that lean on boost. Will see how she responds on dyno but i would expect around 12:1 will be lean enough and still safe. Will see what timing it has comanded under boost when we crack the ecu.

Haha Im super excited too :)
 
Messages
371
Reactions
47
State
NY
Country
United States
#7
Yup 14.7 is stoichiometric but we dont want to go anywhere near that lean on boost. Will see how she responds on dyno but i would expect around 12:1 will be lean enough and still safe. Will see what timing it has comanded under boost when we crack the ecu.

Haha Im super excited too :)
Cool, thanks!
 

Dan

Member
Messages
276
Reactions
22
State
FL
Country
United States
#8
I hit the subscribed button so fast my mouse button over heated. [giddy]

Going to be following this very closely.
LOL you're not the only one.


So 233rwkw translates to about 312rwhp. Is that what you were expecting?

11:1 is way safe, hopefully the Stinger can make safe power at 12:1. Can't wait to see the results.
 
Messages
420
Reactions
176
State
Non-US
Country
Bahrain
#9
Cool, can't wait for updates.
 

SeoulStinger

Active Member
Messages
538
Reactions
34
State
CA
Country
United States
#10
Good stuff, locked in for updates.
 

Kale808

Active Member
Messages
566
Reactions
53
State
HI
Country
United States
#12
[MENTION=217]Jonnytig[/MENTION] what's your thoughts on running Water/Methanol Injection on the Stinger?
 
Messages
102
Reactions
11
State
Non-US
Country
Canada
#13
Do you happen to have a copy of the dyno you can share? I'm curious what the power curve looks like.
 
OP
J
Messages
97
Reactions
78
State
Non-US
Country
Australia
Thread Starter #14
[MENTION=217]Jonnytig[/MENTION] what's your thoughts on running Water/Methanol Injection on the Stinger?
Personally i dont believe it is necessary with a good intercooler system. Will be developing ours very shortly
 
OP
J
Messages
97
Reactions
78
State
Non-US
Country
Australia
Thread Starter #16
So we had our Stinger up on the hoist today. We have built and fitted a dual 3" SS cat back exhaust. The oem is exhaust is very restrictive. The car feels a bit stronger down low but its 37degC here today. Also it has a rather nice 6cyl raspy note. Will get her back on dyno for another pull as soon as possible. Heres some pics for you guys :)

20171121_125933.jpg
20171121_135309.jpg
20171121_153757.jpg
20171121_153902.jpg
 

VegasStinger

Active Member
Messages
655
Reactions
42
State
NV
Country
United States
#17
Great work. Is that crimp in the exhaust pipe because of the rear axle shafts? Is there much of a decrease in clearance with the new exhaust setup?
 
OP
J
Messages
97
Reactions
78
State
Non-US
Country
Australia
Thread Starter #18
Yup exactly what its for. Crimped halfway through pipe so pretty restrictive. The front pipes to second cats are oval aswell. Look its obviously a bit tighter as its gone from 2" pipe to 3" but still plenty of clearance and no rattles
 

ATXStinger

Active Member
Messages
928
Reactions
67
State
TX
Country
United States
#19
Wow you guys are quick. Any videos of the exhaust?
 
OP
J
Messages
97
Reactions
78
State
Non-US
Country
Australia
Thread Starter #20
Wow you guys are quick. Any videos of the exhaust?
No mucking around down here ;) No video but i guess i should record one hey. Will try n get around to it tomorrow ??
 


Top