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Want to know if anyone has done a full motor build or at least the heads on the s4 and what kind of gain can be had. :thumbup:
Well, first determine how much horsepower to the ground you can handle in an AWD car.
300 to the wheels is fast and newbs to the awd car will be giggling school girls for years with that much power
400 to the wheels requires FI and is ridiculous amount of acceleration and power. JHM is not even close to that on their all motor cars and they are running 12.70 at 111
If you are one of those that says "yea but its so much easier to get 400+awhp in an EVO or STI so I'm gonna get that" well..you haven't really considered a b6/7 S4 for what it was meant to be.
This not a "insertawdturbocarhere". This is a luxury car that has respectable hp. Is fast enough stock for most of the original buyers and running 12 sec 1/4's is all you will ever need if you have all the boltons and a JHM tune.
Most people and enthusiast can't handle more than 300awhp anyway. This is nothing like your fwd or rwd cars.
Seriously? Every auto manufacturer "underpowers" their motors. It's a safety margin. The RS4 4.2 can handle even more power than the S4 4.2 with stock internals, etc. It's the same with American and Asian cars. All have a safety margin.To be honest i think jhm has done a awesome job on providing bolt on parts that can bring the NA s4 to life. But sure some will agree that the s4 for the money spent is greatly under powered. Most would be happy if the s4 came stock making 300awhp. Running mid 12 in the 1/4 from a 4.2 v8 isn't all that great. Just saying! the thing is the 4.2 v8 is a strong motor and can handle 400awhp stock untouched so why did audi under power it.
Yeah, but they won't go to the dragstrip which is 30 miles down the road for them. They prefer to have "dyno days" where everyone jumps on the dyno and pats themselves on the back. I call bs on all that dyno crap until you show me proper real world gains.If anyone is interested take a look at mrc tuning out in the UK and u will see what a NA 4.2 v8 can do when u really puched with some really good mods. And there supercharge s4 and sr4 are make 500-600+awhp. Check it out!
Yeah, JHM has a few things going for them. 1) They test the **** out of their products. This is why they're always last to market. Over 2 years of planning, designing, in-house testing (to the point where they deliberately blew up an S4 4.2 to see how far they could take it) and then beta-testing for their supercharger kit. 2) They stand behind their product. If you have concerns/issues, they'll take care of you. 3) Knowledgeable folks.:thumbup:
yea as of now my money is on jhm, they have proven to make good gains over most of the other company's. And im sure they will come out with a killer real world power supercharger kit.
The tune will completely change your car although it really shines with a proper 2.5" catless downpipe/catback setup. You'll notice the throttle is way more sensitive. Just give it a week or two for your brain and feet to adjust.im excited to see how good there products are. im buying the manifold and the tune this weekend actually.