On 24th of July I went to my third RR session. This time with a new turbo . You can read about the installation here: It´s time for a new TURBO - Mitsubishi 19T

Previous result with original TB2810:
Crankshaft: 277hp at 5200 / 381 Nm at 4600 (281 lb/ft)
(Original: 220hp at 5750 / 310 Nm at 2500)

My mods so far:
Mitsubishi TD04-19T
Pro Alloy FMIC
Gtec2
NGK BKUR 7ET
Blueflame 2.75" from turbo and all the way to the bumper
Motorsport 100 cells race cat
Pro Alloy SIP with APEXi Cone filter
Forge DV006
Malpassi FPR 1:1.2
Armval BCV11 set to 1.25 bar

Petrol: 98 octane.
Ambient temp: 25 degrees C
Intake temp: 40 degrees C

Here is the result:

Crankshaft: 321hp at 6500 rpm / 388 Nm at 5600 rpm (286 lb/ft)

Transmission losses: 36 hp / 38 Nm (28 lb/ft)
AFR is between 11.8 - 12.6. At 6500 rpm it´s 12.6. I checked with the guy who runs the RR and he said that this value was okay.

The figures above are circa figures. I will soon have all data from the RR session. I will check them and update if necessary.

So what do you think guys?? Mitsubishi is pretty okay ?

Big Graph: 19T graph pic

Explanation - Graph:

fredrikfiat003 = Run 3 with EBV

fredrikfiat004 = Run 4 with PRV

Wheel HP and torque.

Looks like a nice result, especially for that boost level. I would have said 12.6 was a bit high, but I'm by no means an expert.

Looks good, around what you might expect from a GT28R with the same setup. Will be interesting to see the shape of the torque curve in comparison.

12.6 is a bit high that high in the rev range. below 12 would be better!

nice figures though

peak torque is quite late, when does this turbo come on boost?

I think that 12.6 is too lean at the top end - you want to be running in the 11's. Did the rolling road check the car for detonation or only for fuelling.

12.6 is too lean IMHO, although I doubt she's detting yet, I'd prefer mid to high 11's.

Great results, sounds like a good turbo. Re the fueling, at what point do you start to see 12+ afr? It is too lean for general safety especially if you are 12+ at peak torque where you will likely be getting some detonation. Realistically 12.6 is closer to what you would run a NA car with a standard 20vt somwhere between 11.8-12 afr.

That is an awesome result Freddan, congratulations

It is running very lean though. Try to get a print out with the AFR on so we can see if it is a progressive curve towards the redline. You may even get away with just a Walbro and Wiring mod to fix it if it is. Otherwise a remap is on the cards.

It's a shame you didn't have it RR'd at standard as your car is making huge power for the mods... Unlike mine at the moment

Freddan - you are running that power on the standard fuel pump?

I think the 19T is almost the same size as the GT28RS (if you look at the compressor maps and compare them).
A friend of mine, Alx, has a GT28RS. We use the same RR place and he got 320 hp. The specs are not identical but very close . I think it´s only the exhaust that is different. He has 3" exhaust, I have 2.75".

Yes

I also thought it was a little bit lean. I will talk to him again, maybe I change the setting on the FPR.

He also checked for detonation and there weren´t any.

why not get a Walbro fuel pump and wiring mod, much better solution than raising the fuel pressure.

Hi Fredrik,

I tried to send you an email, but your seam to have a summer holiday .

Nice results, although I would expect the torque to be higher and peak torque much earlier.
I will send you two graphs of my friends Coupes (after you are back in work), the other with GT28R and the other with GT28RS (0.64). They both are using bleed valves. I think the curve of the GT28RS is quite close to yours, although I haven't seen your yet.

- Jari -

Agreed - you need to make sure that the fuel rail is filling up properly. Increasing the fuel pressure will not help you with this.

Hi Jari,
I send my home email address via pm.

So you think I should drop the FPR and add a Walbro fuel pump and wiring mod instead?

Have both Freddan!

Anything that helps the fuelling system function better has got to be a good thing

I'm using a standard FPR, with a Walbro + wiring mod, and my fuelling is mid-high 11s at 314bhp, so I dont think you need an uprated FPR.

yes!

But if I do that I could get tons of fuel and I don´t have the means to adjust it.
Do you mean I should also remap it?

At the moment you are likely running lean as the pump can't supply the fuel, not because the chip is not trying to supply the fuel.

If the chip is up to the job then the pump and voltage mod should sort the fuelling....however I have always said that if you want a map that is 100% then you need to get the car mapped. IMO you should not run over 300bhp without a custom map, otherwise you end up costantly tweaking things and paying for numberous rolling road runs....etc....

Before the test run with the PRV, I also did three runs with the GM EBV, to set up the FPR, and I got lambda 0.79 = AFR 11.6 on the third run. But the ECU + EBV lowers the boost so I don´t see any power at the end. I managed 286 HP with the EBV. +9 HP compared to the TB2810. When I tested the TB2810 (at the second RR session) it was overfuelling badly, I got AFR 10.7, so I believe I could at least have 280 HP with better fuelling.

I will soon post a graph so you Flea, and everybody else, can see the result

Graph: Mitsubishi 19T on a Fiat Coupe 20v Turbo

fredrikfiat003 = Run 3 with EBV

fredrikfiat004 = Run 4 with PRV

Wheel HP and Torque.

Enjoy

Hmmm, it's a little hard reading that graph as the scales don't have enough resolution, especially the fueling. I am assuming the figures on the right are the values at 6500rpm where the vertical pink line shows on the graph? If so then your fueling is great at around 11.6 up to 5600rpm and then it starts to lean off quickly to 12.6 all the way to redline. Looks like it could be a weak fuel pump + voltage drop.

Freddan72 grab this bargin:

http://www.fiatcoupeclub.org/forum/ubbthreads.php?ubb=showflat&Number=656549#Post656549

Maybe this is better?: Bigger graph pic


Yes that is right.

Hi all!

I have finally received the data files. Here is the final result:

Crankshaft: 326hp at 6300 rpm / 394 Nm at 5600 rpm (291 lb/ft)

Transmission losses: 36 hp / 38 Nm (28 lb/ft)

Power at the wheels: 290.3 hp / 356 Nm (263lb/ft)

Max boost pressure: 1.28 Bar at 5200 rpm

Boost pressure at 6300 rpm: 1.17 Bar

What’s ambient over there?

When I did the runs it was 25 degrees C.

That's nice results