Buying WS6 w/ headers, egr delete....Need tune??
10-13-2014, 07:44 PM
#1
Buying WS6 w/ headers, egr delete....Need tune?? I am going to look at a ws6 this weekend. The car has egr delete and headers and catless y-pipe. I was wondering if the car would need a tune with just these exhaust modifications.
I was planning on getting the Engine Light tuned out which should be around $150 so I can pass an echeck booth but didnt know if the car would need an actual dyno tune with just these minor exhaust changes. If so how much would I be looking at for a decent tune?
I was planning on getting the Engine Light tuned out which should be around $150 so I can pass an echeck booth but didnt know if the car would need an actual dyno tune with just these minor exhaust changes. If so how much would I be looking at for a decent tune?
10-13-2014, 07:54 PM
#3
10-13-2014, 08:16 PM
#4
Won't hurt it....it'll just run rich. I ran mine without a tune like that for years. I would just get a mail order tune. I'm normally not a fan of them but for just bolt-ons I wouldn't waste $400 on a full dyno tune. They can turn off the engine light with one too.
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10-14-2014, 11:21 AM
#9
As for additional mods for the next year or so it is doubtful but as time progresses the car will probably receive h/c/i setup.
Thanks you for the replies and to that mod who redirected the forum I apologize for the misplacement it was a matter of I did not investigate all the potential forum options for proper placement of the thread.
10-14-2014, 08:52 PM
#10
Meh.....since you asked I looked it up cuz I was curious despite your sarcastic wording. Always heard it made the car run rich but I read this from edcmat who is a good tuner. I just copy and past, Interesting...
In closed loop, the air fuel ratio will still be stoich. Even though the headers allow the engine to move more air, the computer compensates so it can keep it in stoich during closed loop operation.
Under WOT, when its running open loop, plus power enrichment, the headers cause the air fuel mixture to be somewhat leanER than the if it had exhaust manifolds. That being said, it is still not LEAN. Which, by definition is numerically above stoich, or 14.7:1.
Typically a stock LS1, unmodified what so ever, will have an A/F ratio of somewhere around 11.4:1
With nothing more than a good set of long tubes, the A/F ratio usually will be a full point higher. That is 12.4:1. I've seen them close to 13:1 from long tubes and a good intake.
Under WOT, when its running open loop, plus power enrichment, the headers cause the air fuel mixture to be somewhat leanER than the if it had exhaust manifolds. That being said, it is still not LEAN. Which, by definition is numerically above stoich, or 14.7:1.
Typically a stock LS1, unmodified what so ever, will have an A/F ratio of somewhere around 11.4:1
With nothing more than a good set of long tubes, the A/F ratio usually will be a full point higher. That is 12.4:1. I've seen them close to 13:1 from long tubes and a good intake.
10-15-2014, 11:37 AM
#12
Thanks for all the replies.....
Was supposed to go down Saturday to view and purchase.
Car sold Today.......
Wasted vacation day and $20 to have the bank check priority mailed to my house for the weekend.
My luck at buying cars this summer has been about as bad as it possibly can get.
Was supposed to go down Saturday to view and purchase.
Car sold Today.......
Wasted vacation day and $20 to have the bank check priority mailed to my house for the weekend.
My luck at buying cars this summer has been about as bad as it possibly can get.
10-17-2014, 08:16 PM
#15
I would get a dyno tune even with the few mods you have. I did longtubes, air and egr delete witb high flow cats and my car was super lean on wot. Like 18:1 lean. And there was a 180km/h speed limiter on the car. It was really expensive for the dyno tune but if I didnt get it done, i would of probably blew my engine.