EFI VS Stage II

[Delorean Industries]

Post 17 directly contradicts post 16. Nice.

That's assuming the 130hp number is accurate, anyway. That's a 31.5% loss.

Oh, so that puts the Stage 2 at 166hp if the 31.5% loss is accepted as true.

As always it lands right in the middle. Greater than '20 or 25' and well below '197.'

This is why we provide specs for what we build. Standard on anything forced induction and available per request on EFI and naturally aspirated installs.

[dodint]

Which it is not.

The constant moving of goal posts is what takes the life out of these discussions. I'm willing to say the '197' number is baseless. The 130 number? That's been the number for over 35 years. You'd have to bring some very convincing data for me to move off of it.

[Delorean Industries]

The best we produced on an engine dyno with a stock PRV using K jet was 127 with a converter (stock exhaust) 135 with a test pipe.


This was back during the development years.

twin_turbo_dyno_testing__78452.1418498509.800.600.jpg

[Mark D]

A guy named SonnyV swears by stage II BHP numbers.

In before post is deleted

[dodint]

Thanks for the numbers, Josh.

I fully acknowledge that drive train loss might not be scalable in a linear way, either. It's fun playing with the numbers.

Bottom line is I have 114whp and my car can merge onto the interstate without an issue. Good enough for me.

[GCMW Deloreans]

This is why we provide specs for what we build. Standard on anything forced induction and available per request on EFI and naturally aspirated installs.

I was curious about the EFI set up, I almost got one.....almost.

[ssdelorean]

I dyno'd my car last year. It peaked at 114hp. 42% drivetrain loss is a ton, but I have zero faith in the transmission to begin with, it shifts like a milk truck so I can't imagine it's terribly efficient.

The same drivetrain loss on a stock motor would put me at 75hp.

It's also worth noting that I didn't pay to install the Stage II; it was there when I bought the car. I don't have a frame of reference other than my own car.

Wow, I would expect more from a car with a "Stage" upgrade attached to it. Not tuned correctly?

The constant moving of goal posts is what takes the life out of these discussions. I'm willing to say the '197' number is baseless. The 130 number? That's been the number for over 35 years. You'd have to bring some very convincing data for me to move off of it.

The best we produced on an engine dyno with a stock PRV using K jet was 127 with a converter (stock exhaust) 135 with a test pipe.


This was back during the development years.

twin_turbo_dyno_testing__78452.1418498509.800.600.jpg

My stock daily driver when it was at 167k miles had 119hp at the wheels when dyno'd. One more HP than Patrick C's and he had the wider DMC Europe stainless exhaust on his car! Yeah, Patrick I'm still bragging bout that extra 1 HP from my stock pos :-)

[BladeBronson]

Big thanks to everyone who's actually taken the time to dyno. Is there enough information to fill in a chart similar to:

Config                    HP at crank      HP at wheels

Stock                          ?                 ?
DMC Stage I (exhaust)          -                 ?
DMC Stage II                   ?                 ?
DPI Spec I (exhaust)           -                 ?
DPI Spec II                    ?                 ?

[Spittybug]

Isn't this akin to apples and oranges?
Stage II is an upgrade to enhance performance on top of the existing K-Jet system, right? It is cams, cylinders, exhaust.... mechanical improvements.
EFI is reliability of fuel delivery, flexibility of spark delivery and modernization of process control.

As Mr. Deming if one should attempt to improve a system before ensuring it is under control........................................... .

[Josh]

Isn't this akin to apples and oranges?
Stage II is an upgrade to enhance performance on top of the existing K-Jet system, right? It is cams, cylinders, exhaust.... mechanical improvements.
EFI is reliability of fuel delivery, flexibility of spark delivery and modernization of process control.

As Mr. Deming if one should attempt to improve a system before ensuring it is under control........................................... .

A bit late to the party there owen