15 psi Parking lot launches

[Turbo AWD]

A few parking lot launches, nothing to write home about.

YouTube - Monster Talon Pre-boost Tune 15psi

[mattlikespeople]

15psi and 560hp? dont know must about these cars but that sounds a bit much

[Headracer]

Yeah... getting 560 hp at 15 psi from that engine is a little absurd... My GTI only produces about 100hp/liter (stock) and it is direct injected in addition to running about 13 psi of boost in stock form. Generally it takes a hell of a lot more boost than 15 psi to get numbers like that out of an engine that size, unless these guys have discovered kryptonite fuel or something.

[rydinturbo]

YouTube - Monster Talon 2.0 1st Time At The Track
well it ran low 11s pretty easily so it aint doutable

[Headracer]

Can't argue with those times, but I've gotta say I don't believe the pump gas part given how quick it is. 560 hp out of a 2.0l equates to about 280hp/liter. On pump gas? Somehow I have trouble believing that. Not saying its not possible, just that none of the race engineers I'm friends with know how it would be done with commercially available parts. Sure as hell would like to talk to the guys who built that car though.

[JustROLLIN]

Its a 15psi launch... Not a 15psi car...

[Turbo AWD]

Originally Posted by JustROLLIN

Its a 15psi launch... Not a 15psi car...

^^^ exactly


I'm not sure where 15psi and 560hp came from.

Though 560hp at 15psi does not sound correct, keep in mind it's not about psi. When it comes to turbo output power it's all about cfm's and lb/min.

For example 15-psi on an evo III 16g turbo wont equate the same HP output as 15-psi on a 35r turbo. Simply because the 35r is ~65 lbs/min rated turbo and flows ~350 cfm's more than the 16g.

Thus the 16g is ~350hp capable, and the 35r is ~600hp.

Take this for example. A garden hose can produce 5psi of water pressure as can a fire hydrant hose, But the fire hydrant hose will produce far more flow (GPH).

It's all about cfm's and lb/min .

[Headracer]

The 15 psi/560hp numbers came from the youtube description of the first video posted in this thread (last sentence in the description). Though you make a very fair point about total volume of air flow vs. simple boost pressure, it is the same idea I was expressing in my post. A turbo can flow an insane volume of air at insane boost, but if the fuel can't handle the combined pressure of boost+compression, it will still pre-combust or make the engine suffer detonation. The reason for this is that it is very easy to boost such a volume/psi of air that injecting the required amount of fuel to burn with it creates a situation with extremely high compression ratios. Given race fuel that can be compressed to this degree, there is no problem and huge power is surely on tap. My skepticism stems from the fact that 1)I've never seen a 15psi/560hp eclipse before but more importantly 2)I find it hard to believe that a 2.0L engine could have enough fuel and air pumped into it to produce that amount of horsepower without requiring a far higher octane rating than 93. A racing fuel would allow about 1.75 times as much fuel/air to be compressed in the chamber while still avoiding detonation. To put things in perspective, the 2.3 liter race tune engines in the IMSA Lite cars we run only put out 100hp/liter on race gas, although I grant that they are N/A and not turbo.

[Turbo AWD]

Here's a guy name Andrew from dsmtuners that ran a 10.85 @ 128mph on 93 octane. He used the FP3052 turbo similar to the 35r. For more specs search for dsmtuners member super95awd.
YouTube - 10 Second Pump Gas 2g

FP3052 turbo

[Quibron]

Not trying to brag but my 2.5 subaru makes 400 hp @15 psi

[ray_sir_6]

Originally Posted by Headracer

The 15 psi/560hp numbers came from the youtube description of the first video posted in this thread (last sentence in the description). Though you make a very fair point about total volume of air flow vs. simple boost pressure, it is the same idea I was expressing in my post. A turbo can flow an insane volume of air at insane boost, but if the fuel can't handle the combined pressure of boost+compression, it will still pre-combust or make the engine suffer detonation. The reason for this is that it is very easy to boost such a volume/psi of air that injecting the required amount of fuel to burn with it creates a situation with extremely high compression ratios. Given race fuel that can be compressed to this degree, there is no problem and huge power is surely on tap. My skepticism stems from the fact that 1)I've never seen a 15psi/560hp eclipse before but more importantly 2)I find it hard to believe that a 2.0L engine could have enough fuel and air pumped into it to produce that amount of horsepower without requiring a far higher octane rating than 93. A racing fuel would allow about 1.75 times as much fuel/air to be compressed in the chamber while still avoiding detonation. To put things in perspective, the 2.3 liter race tune engines in the IMSA Lite cars we run only put out 100hp/liter on race gas, although I grant that they are N/A and not turbo.

Use a Garrett GT4094 and you can flow enough to make 560@15psi.
TurboByGarrett.com - Catalog

I work at a shop that builds EVO/DSMs. 560whp in a 2.0 4G63 is just a daily driver, nothing far out or extreme.

My Miata has a tiny turbo, and it can make 250-270 @15psi, on a 1.6l motor.

[speedking87]

4g63, only bullet proof 4cyliner i'll mess wit
15 pounds and 560 awd hp dam mind u he is runnin e85 on that and pump on the 11 run
but its quiet plain that the car is built, look at shep and jake, fast ass cars and wat..... 4 cylinders.. but they are running more then 4 injectors lol
but can any1 get the specs on this talon

[ford_racer]

All psi measurements are not equal.

15 psi in a large cubic inch engine and 15 psi in a small cubic inch engine are two different things.

15 psi in a supercharger and 15 psi in a turbo are too different things.

There are MANY variables when it comes to boost measurements. Keep that in mind folks.

[bmxer99]

Originally Posted by Headracer

Can't argue with those times, but I've gotta say I don't believe the pump gas part given how quick it is. 560 hp out of a 2.0l equates to about 280hp/liter. On pump gas? Somehow I have trouble believing that. Not saying its not possible, just that none of the race engineers I'm friends with know how it would be done with commercially available parts. Sure as hell would like to talk to the guys who built that car though.

it was on E85