Originally Posted by rotarygod

i saw that motor on the dyno a couple of years ago at rb. They told me (and everyone else there) exactly what was in it. There is nothing special in there and it's not a renesis. They will definitely tell you what is in it if you ask.

*rant mode on*

i'm going to be the blunt voice of criticism (reality) here and it's going to be offensive to the op but quite frankly if a person doesn't know the advantages/disadvantages of running e85 vs any grade of gasoline and is wanting to do it for "the octane", then quite frankly they aren't smart enough to build or probably even afford a 20b yet alone get it installed in their car.

Second, if your plan is to use a microtech to control a 20b, again, you don't know what you are doing and probably can't get a 20b running in your car. My guess is that this ecu is being chosen based on price which makes me assume there isn't much money which means a 20b isn't going to be affordable either.

Third, if you have to ask what it's going to take to make 450 hp out of a 20b, you don't know enough to get a 20b built and installed in your car.

If you have to ask how much fuel pressure is necessary to get that much power, then clearly you don't know anything about fuel systems and lack the knowledge and ability to design a fuel system and probably don't know how to tune it as a result. Here's a tip though. E85 and gasoline has different requirements.

I don't care who claims how much power that they had on a previous engine. I've been there too. With a turbo, it isn't hard to make lots of power. Damn near anyone can go fast with a turbo!!! Without one it is much harder and this is where true skill really comes into play. I'm sorry if that offends any of our turbo brethren but turbos are very good at masking even serious mistakes.

A 20b is 50% larger than a 13b but it isn't 50% more work or cost. It is nearly 500% more.

If this offends at all, kindly step away from the computer and go out and actually get a realistic grasp on what it is going to take to make that much power and a realistic expectation in terms of budget. Whatever you think it's going to cost, at a very minimum double it! You'll probably still pass it.

When you realize that i'm absolutely correct, it won't be offensive to hear anymore but will instead have been the thing that snapped you out of dreamworld and back into reality. There is a very good reason why more of us don't have this setup. That does include those of use with the know how and skill to pull it off. We see questions like this all the time and it is almost always from someone who doesn't know much yet who saw a car in a magazine or online with a larger engine who thinks it is as simple as swapping that small block chevy for that big block in an '87 camaro. Not even close! This is more akin to replacing your motor with a jet engine in terms of finances and amount of work involved. You will have to replace your cooling system, oil cooling system, and full exhaust at a minimum. You should change many other things while you're at it and it will cost money that you didn't account for.

Reality sucks. That's why most of us don't have these. Sorry to be so harsh but i feel this should be a sticky to those interested in 20b conversions. Some can do it. Most can't.

*rant mode off*

Originally Posted by rotaryinspired

Time for you to use the search button as this thread has become a waste. Sorry its time for a reality check. No one is going to sit here and spoon feed you the info they have worked very hard to learn. Start reading.