Ted B

iTrader: (6)

This car is owned by forum member "Thomasevo", who was in a jam. He had invested money into a built shortblock and various performance parts (some of which he neither wanted nor needed), only to be facing an out-of-state drive and additional hours of dyno time ($$) beyond what he'd already shelled out to get this car properly sorted. I decided to step in and lend a hand.

MODS:
Built 2.0L shortblock - 8.8:1
FP Black with 25 psi WGA
Kelford 272 cams
Valvespring upgrade & 1mm over valves
Ported exhaust manifold
EPM Dump
3" TBE
Perrin IC
Muse upic
AMS licp
FP air intake
PTE 1000cc injectors
Buschur Double Pumper
Haltech Platinum 1000 ems
Greddy EBC

Discarded (at my request):
Haltech Platinum 1000 ems
Greddy EBC


The Haltech ECU and Greddy EBC created problems and solved none, so they were discarded. After I spent some time in getting things sorted well enough in the factory ECU to where I felt I had a reasonable foundation, this is what we had:

93 octane - 20psi


Already this was better than where we started, and there was a bit of light at the end of the tunnel. But let's face it, no one buys an FP Black to be content with 360whp!


Everything responded favorably during a full afternoon of tuning, and we left off with ~465 knock-free whp on tap at 30psi, through the exhaust. When we opened his open dump valve, it picked up a little power everywhere, especially above 7k rpm, where it registered 485whp with power still climbing.

93 octane - 30psi - Full Exhaust vs. Dump Valve Open



A few carefully chosen parts and an open WG dump tube should put this car where it should be and where I'd like to see it, which is over 500whp on 93 octane.

All graphs are VDR 5.71 in Dynojet simulation with smoothing from '6-8'.

Gary@MellonRacing

iTrader: (74)

Nice Results Ted B , the dump really helped

Ted B

iTrader: (6)

Thanks Gary.

The effect of the dump coupled with the increase in indicated load and MAF signal (as per the log) at high rpm leads me to believe that additional power with these larger stock-framed turbos would be realized with an open WG dump setup. I suspect that would be at least as effective as the open downpipe dump.

Also, notice that the dump seemed to give a mild improvement in spool.

SWOLN

iTrader: (6)

Nice work Ted. The increased spool is a plus. How many lbs blead off up top?

Ted B

iTrader: (6)

It doesn't bleed more than 1-2 psi at the top regardless. I feel it just needs a bit of relief on the back end of things to get the most out of the current setup.

CMB

iTrader: (5)

I notice you use the smoothing at 6-8. What benefit is there in doing so beside raising the power and/or TQ on the chart? My charts are at 12 (default) and when I change the smoothing to 6-8 the power jumps up dramatically.

Ted B

iTrader: (6)

I use enough to make the curves smooth, but not so much that it squelches features of the curve that are important and reflected in the log as such. If I take either curve in the comparison graph above and increase smoothing to '12', it makes a difference of <5 hp, but compresses and flattens the torque curve to something that isn't reflective of the log data, and obliterates key features, such as that slight dip in the power curve of the 'through exhaust' graph at 7500 rpm.

If I need a smoothing factor of '10' or more to smoothen the curve, I consider that log as unreliable, and discard it.

38six

iTrader: (6)

What was wrong with the ebc and the ems ?

racer135

iTrader: (2)

Out of curiosity how are you running 20 psi with a 25 psi WGA? Isn't the boost suppose to be 25 at 0% WGDC?

BLKCarbonEVO

iTrader: (2)

Looks great Ted. Congrats. How much HP do you think a dump like I have (R/TErnie or Shearer 3") is really worth on the Black? I know having a 3" 02 will help spool a lot better too

Mikey

Ted B

iTrader: (6)

They cost money, complicate things needlessly, and are effectively redundant.


I know, some adjustment may remedy that, but so long as isn't leaking, it's probably irrelevant.

mega-z

iTrader: (13)

Nice ted!

Ted B

iTrader: (6)

Well, a 5% improvement (as per AWDMike's testing) would be ~25whp, which would put things over the 500whp mark with no other changes. Being that an FP Black is basically an HTA3582 with a smaller turbine side, it seems logical that anything that can be done to reduce, turbulence, pressure, and standing waves from the exhaust side should aid VE and reduce the PR across the compressor at any given power level.

JohnBradley

iTrader: (30)

Ted, very nice work

Per Exhaust-

I have found the dumps to make power everywhere. We tested it on one of our guys evos (he has done it on his street hondas for awhile).

Best on an old .63 A/r Precision 61mm was 490 with a TurboXS 3" TBE. TJ switched back to a stock exhaust and a single 60mm WG and jumped to 503 with zero changes to the tune. If we had tried exploiting it I know there was more to be had.

aaron

RockmanX

iTrader: (78)

so was the orginal tune done by the shop just crap to begin with?