The Tune by SVC

[ZBoater]

I'm tempted to try it, but not sure I want to spend $250 on a tune right now. I think I'll wait to see what others are finding, and maybe a sale (wink wink)

 

[starkall]

I'm tempted, $250 seems like a lot for one tune. I have an air raid, SW lightning exhaust.


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[krww06]

I'm tempted to try it, but not sure I want to spend $250 on a tune right now. I think I'll wait to see what others are finding, and maybe a sale (wink wink)

I like the way you think ZBoater. Perhaps a 4th of July sale???????

 

[Jackie]

I'm very interested, but going to wait until I see a few more reviews. If I wasn't already "tuned" I'd be all over it. But now it's a question if $250 is worth the upgrade from my existing tune.

 

[fasteddiefrisk]

I just dropped off my CAI with Jarrett so they can put it on the flow bench to make their new tune even better... They said about a week or two!!

Looks like they really have their act together on this tuning program they are working on. Their taking Raptor tuning to the next level...

 

[Ruger]

Holy shit. The stoichiometric optimum is 14.7.
I'm glad I asked. Thank you, Jarrett.

 

[FarFromStock]

Holy shit. The stoichiometric optimum is 14.7.
I'm glad I asked. Thank you, Jarrett.

Mid 12's sounds like a pretty safe AFR for an n/a engine under load.

 

[Ruger]

Mid 12's sounds like a pretty safe AFR for an n/a engine under load.

Based on what?

 

[svc]

Based on what?

Correct the ideal stoichiometric combustion on a gasoline engine is 14.64:1 and this is ideal for cruise and idle operation to maintain good fuel consumption and lower emissions. With most gas stations now carry 10% ethanol we tend to richen our stoichiometric combustion to 14.079 (same as the OEM) since the stoichiometric combustion is richer with ethanol at 9:1.

Under wide open throttle or higher rpms on most NA engines tuners look to target a richer air fuel ratio somewhere around 13.1 to 12.8 to get the best performance out of their engine. With hours and hours of R&D and dyno time we have found the Raptor likes a little bit richer air fuel ratio at 12.5-12.4, with this air fuel ratio it will also ensure your catalyst, exhaust flange and engine temperature stay within the OEM manufacturer specifications to protect these expensive components.

Thanks

 

[Labraptor]

Well please let us know when you have a tune ready for those of us running the AFE intake. I will give this a shot when you have it ready.