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Need help. Went catless and i regret it

robvas

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Stage 1 & 2 EPA CARB approved. Stage 3 & 4 Off Road only.
It appears the VMP system was pieced together ?
My guess, this started as a CARB EO Stage 2 kit, the Stage 3 E30 pulley added.
The big question, what tune was loaded ?
They are running on the 'stage 2' tune. Most of the aftermarket shops with the cars in the 9's are running a tune that Whipple has modified further, Beefcake has posted about their S650 setup

So reading through all of this….

What I’m not getting is this:
Ford has authorized Dealers that can and do install the Whipples as a Dealer add-on, OR as seen on this site and through various other sites - such aftermarket S550/S650 Vendor versions like RTR, Roush, Steeda, Hennessy, etc etc etc…. And with that in mind - how is it the same Supercharger kit is used by those Companies (and Ford Dealers) - and they are still retaining the factory catback system with NO issues?
They definitely are having issues with the cats. Go check out the truck forums (a lot of guys running the dealer installed superchargers there), Mustang owners are having the issue to.
 

robvas

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Keep in mind guys that the OP has an S650. I thought that they were still pretty locked down in terms of options for forced induction and tuning.
They are, you basically have Whipple (VMP, Ford Racing, etc all the same stuff), Roush, and ProCharger is supposed to be in the mix now

ESS, Vortech, and the turbo companies just need tuning access and a Y pipe to connect both TB's to their S550 designs
 

ZLwhat

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HaHa, this is crazy, never thought I would see someone else from Palmton on here.
 

GregO

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They are running on the 'stage 2' tune. Most of the aftermarket shops with the cars in the 9's are running a tune that Whipple has modified further
Stage 2 and its CARB approved tune by looking at the VMP listings does not list E30/3.625” pulley. E30/3.625” is Stage 3 non CARB approved tune.
Isn’t that risky running E30/3.625” on the Stage 2 tune ?
 

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I Bleed Ford Blue

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Stage 2 and its CARB approved tune by looking at the VMP listings does not list E30/3.625” pulley. E30/3.625” is Stage 3 non CARB approved tune.
Isn’t that risky running E30/3.625” on the Stage 2 tune ?
That's why he probably blew out his cats
 

robvas

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Isn’t that risky running E30/3.625” on the Stage 2 tune ?
I'd feel better on straight E85 and an actual tune for it vs mixing it yourself at the pump and relying on the tune to add fuel...

But people do it.
 

GregO

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That's why he probably blew out his cats
If this is the case then there’s no cleaning up the exhaust noxious fumes. He’s stuck, there’s a good chance the GT500 or Hellcat catalytic bricks will crap the bed in short order.
Maybe the OP will post up more details on his VMP kit.
 

DougS550

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This is probably snake oil but, has anyone running pump and cateless try to use exhaust fume fragrance?
Screenshot_20250107_191156_Chrome.jpg
 

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GregO

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Missed that post. Does it actually work?
100% !!! No B/S
This trick goes back to the Golden Era of drag racing.
Klotz Techniplate has fragrance oils blended into their 2 stroke oils, you’ve heard the phrase “The Klotz Race Scent”
My ratio is proven, adjust accordingly and keep in mind catalytic converters knock down the fragrance intensity.
Cotton Candy is by far the best. I tried Vampire Blood but my neighbor said it smelled like laundry detergent.

Knock your socks off.
https://vacandlesupply.com/Fragrance-Oils_c_13.html
 
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RAVAGE88

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CarmeloS

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You want to save a bunch of money ?
IMG_5690.jpeg

Yup, fragrance oil’s. Those tiny bottles marketed to Motorsport guys are nothing more than fragrance oils marked up to 300% profit.
The two bottles pictured are $18.00 each @ 16oz. My mix ratio is .5oz per 3 gallons and my neighborhood smells like a Carnival when I’m running the chainsaw or backpack blower.
I used to use it trail riding until my buddies complained about craving cotton candy all the time. LOL Pipe tobacco screws with everyone !
Lemme guess, Subbro's everywhere are wondering where the WRX is that's vaping is, looking all confused?
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