My tuner said compressor surge. I'm not sure what it is exactly.
I'll never be driving it in that range anyway so it doesn't matter

compressor surge = too much air at that rpm range for your engine to consume. Mine did the same and is a charateristic of CT20b/CT26 high flow. And the boost creep is also a result of the increased flow once your in the high revs - too much gas and nowhere for it to go since the waste gate cannot be made big enough.
 

I'll probably put an external wastegate on it eventually. My tuner reckons I could run up to 30psi if I really wanted to, though I'd need a different ECU and the external wastegate. It would be interesting to see how many kW you can get out of a CT26.

What boost controller is on it, from the graphs it comes on full boost real quick for a hiflowed turbo.

Blitz SBC

I changed all my fuel lines to be E85 compatibile on the weekend. There is a hose in the fuel tank and I've had the pump out before and it's a pr1ck of a job to get the fuel tank out, so I decided to do it a different way this time.
Note that this is more than likely illegal to do on a street car so please make up your mind before attempting this on a street car.
You need to cut a large hole like this so that the metal pipes can bend enough when you pull the pump out.
Note where the hose was falling apart from being eaten by the E85. Note that other octane boosters do the same thing - Methyl Benzene is an example.







  

Here are some other recent photos.
I thought I'd get a photo of the Oran Park sticker before it rained on the car and it got wrecked. A piece of history!

Whoa this car is coming together very nicely...
What else did you need to change in order to accept E85, besides fuel pump, fuel lines and tuning? Do you have to increase compression to maximise the combustion? I have 2 Caltex E-flex stations not too far from my area, just thought it would be interesting if I made the naturally aspirated 3SGE to suit the fuel (and how much more power I could make) hehe

In addition, you'll need -

• Bigger injectors
• An aftermarket ECU
• Potentially a custom fuel rail (if you had a 3SGTE and making a fair bit of power). A 3SGE should be OK

You don't need to make any changes to the engine.
E85 is cheaper than ULP though you will use more so in the end it will probably be more expensive. You are also limited by where you can get it and different servos have different E85 suppliers and the % Ethanol can vary greatly. I've been told that United has the best quality E85.
 
You will definitely make more power though it's probably more noticable on a turbo car because the E85 burns cooler, so you can run higher boost that what you normally would, thereby increasing the power again. You obviously won't be able to do this on a NA car.
 
Unless you have a racing car, I wouldn't bother with E85 as you will spend a fair bit of money for only a small result.
 

Tree

Whoa this car is coming together very nicely...
What else did you need to change in order to accept E85, besides fuel pump, fuel lines and tuning? Do you have to increase compression to maximise the combustion? I have 2 Caltex E-flex stations not too far from my area, just thought it would be interesting if I made the naturally aspirated 3SGE to suit the fuel (and how much more power I could make) hehe

Im not going down the E85 path. Just not worth it to me. You may as well run 100 octane with some octane boost you find in the race magazines. Probably the same power ( will know when I retune after the Nat's weekend) and better fuel economy than standard fuel.
Also not too sure on that big hole in the middle of the car. Thats is a pretty structual part of the car there..