Good way to scare away potential customers.

"Luc - The Acadian Oppo" (luc5)
07/14/2014 at 21:04 • Filed to: None

You might want to rethink what vehicle you're going to use to advertise your Dyno business with. This doesn't scream high performance to me at all.

DISCUSSION (15)

Logansteno: Bought a VW? > Luc - The Acadian Oppo
07/14/2014 at 21:05

It does scream stupidly cheap to buy and use as a rolling billboard, though.

Vince-The Roadside Mechanic > Luc - The Acadian Oppo
07/14/2014 at 21:05

It has a 6.4 Hemi swap.

Zipppy, Mazdurp builder, Probeski owner and former ricerboy > Luc - The Acadian Oppo
07/14/2014 at 21:08

Parts stores here use Smart ForTwos. They have flames on the paintjob.

GhostZ > Luc - The Acadian Oppo
07/14/2014 at 21:31

But we know exactly how powerful this Jeep patriot is!

Luc - The Acadian Oppo > GhostZ
07/14/2014 at 21:35

if my memory serves me well we are looking at 184hp in top spec 2.4L mated to an ever so wonderful first generation CVT. with Dyno tuning he is now looking at approx 164HP that's right he probably lost 20HP by tuning it.

I kid of course. optimistically is is looking at about 184.2HP with tuning.

Luc - The Acadian Oppo > Logansteno: Bought a VW?
07/14/2014 at 21:37

Would you feel good bringing in a 60K+ car to get tuned buy someone who is stupidly cheap? Didn't think so.

Luc - The Acadian Oppo > Zipppy, Mazdurp builder, Probeski owner and former ricerboy
07/14/2014 at 21:39

that's different tho parts stores are to provide parts to fix your car and make it reliable again. A smart is reliable so they can pull it off.

A part store is not trying to depict high performance tuning.

Logansteno: Bought a VW? > Luc - The Acadian Oppo
07/14/2014 at 21:40

I wouldn't bring a $60k car in to get tuned at all, because at that price the manufacturer better have it tuned pretty well from the factory.

GhostZ > Luc - The Acadian Oppo
07/14/2014 at 21:40

Dyno tuning only works when you have things you can change. On most cars, that's the air fuel ratio, throttle response, and variable valve timing, which means the most you can get on a normal car is probablya ~3-4% bump in power at the cost of fuel economy and reliability.

With turbo charged cars, you have a wider range of possibility because of boost controls, but even that's silly.

The time Dyno tuning should be used is if you can put on variable length headers and intakes, adjust compression ratio, adjust boost levels, oil pressure, etc. like you would if you were building a custom engine, dyno tuning can mean as much as 25-40% power gains from just optimizing your setup, and that's incredible. But it's only because you're optimizing $50,000 worth of parts, not because you're finding a way to avoid spending $50,000 in the first place.

Luc - The Acadian Oppo > Vince-The Roadside Mechanic
07/14/2014 at 21:41

one spark plug from the 6.4 is worth more than the patriot so I some how doubt that it has a swap.

what worst than someone who is stupidly cheap is someone who is just plain stupid.

Luc - The Acadian Oppo > GhostZ
07/14/2014 at 21:51

I agree 100%

I do remember reading somewhere that factory cars are tuned to about 75% of their maximum stock potential to keep them ultra reliable.

there for a 100hp turbo car could make 125hp no problem with nothing else than basic tuning.

I remember when the MK5 GTI came out with 200hp and a simple stage 1 re-flash by ARP would bump it up the 265HP with premium fuel and about 250hp on 87 octane. and remain factory reliable.

N/A cars would require a nothing but cams and a tune so it would be setup for power rather than fuel economy. (cams is doing the same thing as adding boost by allowing more air in the combustion chamber per cycle)

Luc - The Acadian Oppo > Logansteno: Bought a VW?
07/14/2014 at 21:55

As good as a factory tune can be it will always be compromised by fuel regulations and emissions. A C7 Vette could probably net an extra 20-30hp with nothing more than a few keystrokes on a laptop.

To most (myself included) factory tuning is good enough because if you can't have fun with 460hp you're doing it wrong, but to some maximum output matter a lot.

GhostZ > Luc - The Acadian Oppo
07/14/2014 at 22:00

By 25% more, they mean that if you were to raise the RPM limiter (causing reliability issues) AND retime the valves (variable valve timing) for higher RPMs, you'll get higher peak power. But it would significantly hinder your performance in low RPMs, get much worse MPG, and wont' run on regular fuel.

Factory cars are tuned to get the best average performance. Any deviation from that (more HP) comes at a heavy cost of fuel economy and/or reliability. A 25% gain over stock means you've either put in taller pistons, blowing a head gasket, revving it extremely high with a new camshaft, which is likely to cause all sorts of problems, or you're running nitrous or something like that. The ONLY other situation is if it has a turbo, in which case, raising boost pressure would net reasonable gains, but also would raise manifold, intake, and chamber pressures and temperatures beyond what the rest of the car was designed for.

The reason the Mk5 GTI could get away from it was because of the turbo. The flash would let the wastegate keep letting boost pressures build at higher RPMs, netting a higher power gain. I'm not sure 87 octane would be good enough to avoid knocking, but it is possible with only 200 HP out of a 2l engine that has a turbo that it could happen.

Part of tuning old muscle cars involved timing the camshaft with the length of the intake runners, which would result in a higher boost pressure at certain RPMS (as in, the effect of a turbo without the turbo) by creating a vacuum between intake openings. The only problem with this is that the gains really only happened at higher RPMs, which were already dangerous because of the friction involved.

Luc - The Acadian Oppo > GhostZ
07/15/2014 at 00:07

Kinja'd!!!

Alex from Toronto > Luc - The Acadian Oppo
07/15/2014 at 04:35

It's better then a rusted out dodge caravan. Seems everyone I'm my area users them as rolling billboards