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That's pretty good.

One of these days some one is going to figure out how to make one really hook and get the 60' time a lot lower. Add in some cool air and low 14s might be possible.

I want to add enough power that I could run solid 13s (if I was any good at the track, I've never tried because I don't have a local track).

 

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I said if.

I'll be happy with the power even if I'm not good enough to hit the number and I probably won't ever run a drag race suspension setup so it might be stuck in the 14s.

As far as what it will take, I think 270 to the wheels should do it and that will probably take a bigger turbo, possibly a new cam to get more fuel out of the high pressure fuel pump, a nice intercooler, custom exhaust from the header to the tail pipe, probably a free flowing intake (maybe a bigger throttle body) and an Accessport with one hell of a tune.

I might get some lag in the bargain but probably not too bad.

Time and money are the only things that can stop me and as of now time is more threatening.

 

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I've read several times that the stock turbo is tiny.

If you follow this link:

http://www.fswerks.com/collections/...v3-accessport-ecu-flasher-ford-fiesta-st-2014

You will see in their maps that torque tapers off as rpms increase and it says the boost target is 20.5 psi peak tapering to 13.5 psi at redline.

Looking at the torque curve, I believe it.

To me that sounds like the turbo can only pump so much air and at high rpm the boost falls off because there isn't enough flow to maintain the pressure.

If I can get a turbo that holds on to 20.5 psi until redline, I estimate a 25% increase in power from 180 to 225 whp.

If I can add more boost or find power from a free flowing exhaust, intake or upgraded intercooler, I might find 250 whp fairly easily.

The high pressure fuel pump is a Bosch and it looks like they only make one kind. The volume is determined by the number and height of the lobes on the fuel pump cam, worst case I'll need a billet cam and I'll wind up with a fuel system almost exactly like a Focus ST. I don't know if injectors will be a bottle neck but if they are, maybe the Focus ST will offer an upgrade? Focus ST fuel system supports 300+ whp so I'll be good if I can emulate that.

I figure a budget of $5,000 should get me close to my goal and even if I get stuck at 230 whp, it will still be knocking on the door of 13s with the right driver and suspension.

 

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At the autocross test and tune I ran, I had several chances to try different things at the launch and I was paying attention to it about 6 times. The "track" was not too bad, cracked up but pieces were not getting pulled out. The launch rpm is hard to pick, too high and it spins through first until you shift, too low and you bog (I do that a lot on the street). Then there is the clutch release. I think I was happy with 2-3 launches.

With a stickier track it would put down more power and I think I could do that with a little practice, I just worry about the reaction time, staging and all the other details.

Also my idea of solid 13s are more like 13.6 or 13.7, quick enough that an error can add a few tenths and it still runs a 13.

 

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15" front wheels with slicks as tall as you could fit, possibly an anti-sway bar delete, drag shocks with low rate springs and pizza cutters on the back.

A splitter might help but I'm not sure if its worth very much on a car in the 13s.

 

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I was just thinking, Ford ends the party very early with the 1.6 rev limiter. If you install a turbo that can supply enough air, you might be able to bump the power peak to over 7,000 rpm and that could get you to 250 whp if you can stretch out the torque curve from 6,350 to 7,000.

Oh, I will probably never run a drag race suspension on my ST, the above combo is just my guess at what a drag race setup would be.

I forgot, throw in an LSD or spool for drag racing, a clutch upgrade might be nice with a bunch of power and sticky tires.

 

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Well it looks like 230 whp is enough to get the Fiesta solidly in the 13s.

I think the 1.6 has more potential than that. Hopefully I'll find out soon.

I talked to a guy at ATP today, they are only about 30 miles away from me.

 

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Oops, they have about 265 whp. I misread the graph.

Any way, I like the peak numbers quite a bit but I don't like the loss of low end torque, I fear it might make it laggy but I need to ask about that.

It sounds like a Cobb stage two with a race downpipe and good exhaust should be near 220 whp without losing that torque or adding lag. I think I'll try that before I do a turbo upgrade.

 

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Yes, with a good consistent tune, sticky tires and a well adjusted Cobb launch control setting, I expect it will surprise many.

If you think about it, 220 whp is damn close to stock Focus ST power and in a package 500 lbs lighter.

With a turbo swap and weight reduction it will be close to Mustang 5.0 power to weight ratio.

 

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Nice, I imagine that some traction and a Cobb stage 1 tune that removes the low gear torque limiting will help improve the 60' times and that means mid-low 14's with just a tune and tires.

I don't know if you need Accesstuner race to get launch control but that would help too.