My E50 DI dyno results

[AJRMKV]

The Difference between the Nostrum high flows and OE S58 injectors is pretty insane. I'm at 30psi with a similarly sized turbo (Pure 900) my Injector duty cycle stays around 80%. Yours are low 70's running more boost.

Log attached just for comparison https://datazap.me/u/manjot14/multi-gear?log=0&data=4-23

I have the Nostrum's as well and i'm at 76% at 35 PSI near redline with an Omega 65 V1 (shoup tuned). Great product, I think dorch has a larger non OEM set in dev. +100% iirc.

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[M340Manny]

I have the Nostrum's as well and i'm at 76% at 35 PSI near redline with an Omega 65 V1 (shoup tuned). Great product, I think dorch has a larger non OEM set in dev. +100% iirc.

Did you upgrade your low pressure pump?

 

[AJRMKV]

Did you upgrade your low pressure pump?

Yep. Fuel setup is Nostrum injectors, FX400X HPFP and Precision stage 2.5 LPFP

 

[i3igpete]

DECREASING the rail pressure to 4070 psi (from 5071 psi stock) to try and get more out of the HPFP,

Do HPFP's even work like that? I know that trading pressure for flow is a common strategy with electric pumps, but I was under the impression that cam-driven fuel pumps deliver the most volumetric flow when the commanded pressure is high.

https://openecu.com/gdi-fuel-pump-control/

edit: time to check the literature

https://legacy.sae.org/publications/technical-papers/content/2015-01-1273/#:~:text=Besides these topics, one of,pressure pumps for GDI engines.

Looks like from Modern design fuel pumps, running higher pressure has a negative effect on leakage and reversion losses, but has a net positive effect on dead volume compression. Resulting in higher overall efficiency.

Edit 2: for diesel common rail systems it looks like the strategy works, but the efficiency gain is nothing compared to what is wiped out by rpm. Not sure if this is representative of gdi...

https://journals.sagepub.com/doi/full/10.1177/1687814018795591

 

[ColonelAdama]

Do HPFP's even work like that? I know that trading pressure for flow is a common strategy with electric pumps, but I was under the impression that cam-driven fuel pumps deliver the most volumetric flow when the commanded pressure is high.

even the higher fuel pressure tune has it ramped in. doesn't hit 5300psi till like 6k rpm because it would crash the hpfp if it did.

you can see that IDC basically flatlines at 5500 while fuel pressure increases to accommodate the extra demand.
https://datazap.me/u/manjot14/multi-gear?log=0&data=20-21-23-61-62&solo=58-61-62


whereas the lower pressure car has way more injector headroom than hpfp.
https://datazap.me/u/shane-h/153-ma...no-5th-gear?log=0&data=21-23-65-66&solo=65-66

doesn't really answer your question, but I had a good conversation with Shoup about the IDC vs rail pressure strategies.

Also you can see the boost curve of each is pretty much raised as much as it can while keeping hpfp angle reasonably flat and with some headroom.

 

[ntfrendlyGR]

So I’ve been contemplating the next purchase. Cars is basically for spirited driving occasional. 3,4,5,6 gear pulls on the freeway for my adrenaline rush and wife, sissy drives it to work, occasionally . I see the benefit of doing an intake manifold with port injection, but I see myself keeping DI set up only and street tuning to 35-37psi. Was thinking of doing the FI Interchiller with stock manifold, but I can’t find much info on its durability, meaning, what kind of boost it can handle? Anyone push over 35-40psi consistently with their. Wouldn’t imagine there’s many due to the heat that type of psi would create, but thought I’d ask.
I’ve heard nothing but great things about interciller. Hellcat/LT4 guys around here sit in lines at drag strip and don’t heat soak running very consistent times.

 

[rottmore]

So I’ve been contemplating the next purchase. Cars is basically for spirited driving occasional. 3,4,5,6 gear pulls on the freeway for my adrenaline rush and wife, sissy drives it to work, occasionally . I see the benefit of doing an intake manifold with port injection, but I see myself keeping DI set up only and street tuning to 35-37psi. Was thinking of doing the FI Interchiller with stock manifold, but I can’t find much info on its durability, meaning, what kind of boost it can handle? Anyone push over 35-40psi consistently with their. Wouldn’t imagine there’s many due to the heat that type of psi would create, but thought I’d ask.
I’ve heard nothing but great things about interciller. Hellcat/LT4 guys around here sit in lines at drag strip and don’t heat soak running very consistent times.

FI is a universal kit, so I’m not sure how much you’ll end up jerry-rigging or hacking the fuck out of the car.
There’s also Project Gamma. Looks like it's been developed on the a90 platform so would assume there's less jerry-rigging.
I still would upgrade the intake manifold. You're going to remove it anyways for the plumbing, since it needs to be its own circuit.

https://shopprojectgamma.com/products/chiller-system-for-toyota-supra

 

[ntfrendlyGR]

Thanks for info. Project gamma looks cool I’ll have to research that. Interciller now includes all fittings and mounts specifically for the Supra unlike the initial kit last yr. There website doesn’t appear to have changed but through email seems like everything now is pnp.

 

[rottmore]

There website doesn’t appear to have changed but through email seems like everything now is pnp.

I dunno, i wouldn't trust them. With the gamma they at least made a video of it being installed on a supra, no details on how its installed but looks more PnP. Kit doesn't have a massive reservoir tank which is a huge plus.


Where as FI sent this idiot a reservoir tank ment for a G80. And just look at how badly he molested the car with this kit.

 

[i3igpete]

That is a ton of weight on two cantilever bolts and a zip tie.

 

[ntfrendlyGR]

At up to 37psi. Gamma cooler or Do88(non mera)????ready to order but undecided. Part of me wants to just keep OEM manifold (at what point is it restrictive) other part wants a new one(just to see how restrictive OEM is at current set up).

 

[M340Manny]

At up to 37psi. Gamma cooler or Do88(non mera)????ready to order but undecided. Part of me wants to just keep OEM manifold (at what point is it restrictive) other part wants a new one(just to see how restrictive OEM is at current set up).

I like these numbers, Giving me some confidence now

 

[razorlab]

At up to 37psi. Gamma cooler or Do88(non mera)????ready to order but undecided. Part of me wants to just keep OEM manifold (at what point is it restrictive) other part wants a new one(just to see how restrictive OEM is at current set up).

Pretty sure the gamma stuff is just alibaba parts so just get it straight from the bab and save some money.

 

[rottmore]

Gamma cooler or Do88(non mera)

With an interchiller kit, it doesn’t matter whether it’s tube and fin, bar and plate, single pass, dual pass, quadruple pass. It just comes down to quality and price of the manifold.

 

[razorlab]

You can run a water/meth injection setup if you don't want to move away from the OEM manifold.

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