I think before everyone gets excited the numbers need to be strong. We know that FP sprinkles the magic on their stuff but without data you can't jump ship . The Fp54 has a smaller turbine wheel that will effect the power band up top compared to the Red.

fp 54 TW Measurements - 60.8MM Inducer / 54MM Exducer

Red TW Measurements - 67.3MM Inducer / 58.8MM Exducer

If you look at the older green turbo's the power/torque spikes up quickly but then falls out . The Red (at least in my opinion) Makes good power by 3800-4000 and carries well thru 7-8000
This is the stock engine/cams with the red.

 

Comparing it to the 73HTA seems like more of a fair comparison than the Red.

 

My guess is it'll fall right bwtween the two.

 

When you mix red and green you get yellow, there fore I am now renaming this the FP Yellow

 

If you think about it FP's turbos are the same color code as Johnnie Walker's scotch. We just need a FP Blue hahahaha

 

FP rates both the HTA73 and FP54 at 57 lbs/min so we'll see how it ends up.

 

You also have a 9. My car is about 60ftlb's behind yours at 4k rpms (275wtq @ 4k on a mustang dyno). It only makes 20psi at 4k. Don't get me wrong, it's nice setup, but have the torque curve move 500-700rpm to left would be very nice. And the turbo isn't close to being out of breath, so on stroker like a 2.2, it will hold power out the top. But a stroker build is about $2k more (94mm billet crank, custom 153mm rods) than a stock crank build where I can use off the shelf eagle rods for $350 and polish the stock crank...lol


The HTZ wheel flows 57lb/min, which is 3 more than the old 73hta. Not a HUGE difference, but probably good for 30-40whp. Hell, guys can push the 71hta with the stock turbine to very nearly 500whp. So I'm excited to see the FP54 results.


This old HTA green doesn't look too terrible at all, and on 93...
https://www.evolutionm.net/forums/ev...t-results.html

 

There is a point where the engine can't take any more air down low . Cylinder pressure, rpm, exhaust housing all play a role Don't forget a bigger engine will generate more backpressure then a smaller one and with a smaller wheel it might not make more because of pressure. More backpressure is also harder on valves and generates more heat.

Back pressure is the devil.

Off the shelf eagles ? I'd be a tad concerned about the insta torque with them at low rpm. Sure people do it but it wouldn't be my choice on a rebuild.

Its nice to look at avg power across the band as well. If you have an engine that goes to 8000-8500 like a champ why would you want it to be choked by a small wheel?

Lets try to compare dynojet graphs since its hard to say where the mustang dyno was tuned to. Can you find an example of that nearly 500whp 71hta. I'd be interested in seeing the curve. Not taking anything away from that turbo since its a hellva a deal. I know people have gone plenty fast with small turbo's running all the boost (curt brown) but think with different choices its nice to have a broad power curve. You can put your foot into it anywhere and its on the pipe.

I think we are all in for fp54 results on a well tuned car . Its a great deal and again, maybe the magic they do at fp will break all the rules . lol


My before/after graph shows that even with a stroker the power didn't change up top and ran along the same lines.

This is the stock engine/cams at 25-39psi and the new 2.2 engine at 25-34psi. Picked up a bunch of midrange (not to mention safer) but top end results weren't much better. It made 626 but had some spark blowout because of cylinder pressure on the lower end of things. You can only cram so much air into an engine down low.

 

Ordered my fp54 2 weeks ago and UPS tracking says I'll get it tomorrow.

I'll be installing it in an 8 with a built 2.0, CB ported manifolds, and (at least at first) S2s, may change to S1s later on. Itll be tuned on e85, but it's a dedicated track car so the tune won't be Crazy aggressive. I'll post results once it's together and tuned, it'll probably be over a month as the car has many other changes going in as well. Im excited to see what kind of power band I can squeeze out of this lil guy.

 

Excited to see results.

 

Have your tuner will do a ~25psi "street tune" dyno pull, then have him turn down the boost for your track tune.

 

25psi should be the track tune...


Tell him to do a kill tune, then dial it back..

 

I will most likely have a kill tune just to play around at one of the roll racing events or something around here. It's not something I care to do often, but it'd be fun to pit it against some of my friends street toys. Won't be taking it to the strip though, I'd rather break it on a road course lol.

 

+1 that's probably what I'll be doing on my HTZ73. I look forward to results on the 54 to compare to mine. I'm curious to see how much difference the smaller turbine makes.

 

Or just track your Kill tune