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I was more refering to the rapidly expanding gas and the huge heat shock it would cause, like a 600-700deg exhasust manifold and then spray some cold water into it

Edit - oops still signed in to Prues account lol

Zebra

Ahh ok, I was getting mixed up with an old engine idea of injecting water in with the fuel to keep engine temperatures down: barely any combustion energy is lost due to the expansion of the liquid water and wouldn't affect the exhaust as it would be at temperature.

You're right though, it'd only do damage after the pistons

Sorry for the late reply haha.

I have a few graphs to show the difference between E85 and PULP 98. Same car, same dyno, same night, same tuner.

PULP 98 VS E85 Same boost.

e85vs%20pump%2022psi.jpg

As tuned

e85vs%20pump%20as%20tuned.jpg

PULP 98 VS E85 at 2 bare85vs%20pump%20max%20power.jpg

Basic spec list is:

GT block

Tomei 2.8 (9.0 compression)

270 @ 10.25 cams

ported head

HKS GT RS's

HKS dumps and front pipes

kakimoto full mega N1 cat back

Power FC

ID 2000 cc injectors, Nismo lift pump and 2 bosch 044's feeding the engine

+ all the bullcrap to support it.

The midrange improvement on E85 is amazing! Once it comes on the tacho just flicks to the limiter. RWD is quite fun!

well done, crazy results...

Gosford caltex is doing tank works at the moment which means yeeeeehhaaaaaa E85 will be in my tank soon :action-smiley-069:

Was a little bummed at the final figure to be honest.

Its funny... My last tune on the same dyno before the ARC cooler went on was 370 rwkw on 98... and this time I didnt crack the 350 mark. Bit strange.... They have changed dyno's though.. maybe that has something to do with it. Either way it feels 461946129649% better on E85. The throttle response is amazing. It almost knows what your going to do before you do anything with your right foot!

Was a little bummed at the final figure to be honest.

Its funny... My last tune on the same dyno before the ARC cooler went on was 370 rwkw on 98... and this time I didnt crack the 350 mark. Bit strange.... They have changed dyno's though.. maybe that has something to do with it. Either way it feels 461946129649% better on E85. The throttle response is amazing. It almost knows what your going to do before you do anything with your right foot!

Are you sure they've changed dynos?

Not a bad figure there... What were you expecting it to make before going E85?

Was a little bummed at the final figure to be honest.

Its funny... My last tune on the same dyno before the ARC cooler went on was 370 rwkw on 98... and this time I didnt crack the 350 mark. Bit strange.... They have changed dyno's though.. maybe that has something to do with it. Either way it feels 461946129649% better on E85. The throttle response is amazing. It almost knows what your going to do before you do anything with your right foot!

Congratulations on the result. What exhaust manifolds are you running?

Was a little bummed at the final figure to be honest.

Its funny... My last tune on the same dyno before the ARC cooler went on was 370 rwkw on 98... and this time I didnt crack the 350 mark. Bit strange.... They have changed dyno's though.. maybe that has something to do with it. Either way it feels 461946129649% better on E85

Usual variance is you say +/- 15rwkw, fits into it though whether they have/have not changed it :D

The 350rwkw run you are only running just over 22psi (or so??)

The final 416rwkw run is 25-27psi. Boost + fuel have given the result there don't forget.

GT-RS's on 20-22psi aren't doing much anyway. You really do need to get 25-30psi into it and hence the 416 run has seen a nice solid punch when combined with the E85

The gains are quite good as it comes up onto boost in the midrange. Not surprised at all you notice it, RWD surely has to be pointless :action-smiley-069:

Although overall, the end result is nothing that -5/2530's can't do (power vs boost wise), with better response...

Are you sure they've changed dynos?

Not a bad figure there... What were you expecting it to make before going E85?

Yeah they have.... only had it a few months I think

I was hoping around the mid 400's. As you can see the difference between 1.7 bar and 2.0 bar netted an extra 12 kw. Yavuz reckons its the exhaust housings and the exhaust choking it up a tad. Hmmmm i dunno

Congratulations on the result. What exhaust manifolds are you running?
Tomei Expreme.
Usual variance is you say +/- 15rwkw, fits into it though whether they have/have not changed it :D

The 350rwkw run you are only running just over 22psi (or so??)

The final 416rwkw run is 25-27psi. Boost + fuel have given the result there don't forget.

GT-RS's on 20-22psi aren't doing much anyway. You really do need to get 25-30psi into it and hence the 416 run has seen a nice solid punch when combined with the E85

The gains are quite good as it comes up onto boost in the midrange. Not surprised at all you notice it, RWD surely has to be pointless :action-smiley-069:

Although overall, the end result is nothing that -5/2530's can't do (power vs boost wise), with better response...

Yeah the midrange is what I was hoping to really gain out of this. As we all know GTR's have sweet FA under 4K anyway (unless you have a dirty 30.... which one day I will have haha).

Ash there are times which I had the 2530's hanging off the side of mine, Esp with the OS 5 speed sometimes you just cant carry that much speed into slow corners..... this is where a 6 speed would really shine! Get her onto a fast flowing track like Eastern Creek and thats where it would love it! But lets be honest... I aint changing turbo's. Effort, time and money. 600 HP road car is enough for most people yeah? lol

The gains are quite good as it comes up onto boost in the midrange. Not surprised at all you notice it, RWD surely has to be pointless :action-smiley-069:

Ha. Spinning the rears at 140 in second (OS 5 speed) in the dry is hell fun! haha

hehe gotta love the extra bit of length the OS gives :action-smiley-069:

Yeah the midrange is what I was hoping to really gain out of this. As we all know GTR's have sweet FA under 4K anyway (unless you have a dirty 30.... which one day I will have haha).

Ash there are times which I had the 2530's hanging off the side of mine, Esp with the OS 5 speed sometimes you just cant carry that much speed into slow corners..... this is where a 6 speed would really shine! Get her onto a fast flowing track like Eastern Creek and thats where it would love it! But lets be honest... I aint changing turbo's. Effort, time and money. 600 HP road car is enough for most people yeah? lol

It does indeed depend on what you are doing and the setup of course :D

Was just musing on it as i have with Steve-o a couple of times of late about -10/RSs vs -5/2530s

Yeah they have.... only had it a few months I think

I was hoping around the mid 400's. As you can see the difference between 1.7 bar and 2.0 bar netted an extra 12 kw. Yavuz reckons its the exhaust housings and the exhaust choking it up a tad. Hmmmm i dunno

Oh indeed – having a ponder on the throne just then.

I too wonder if there is an exhaust restriction... easy way to be checking that one :D

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