Newbie H22a5 project

stinkypaul · Post by **stinkypaul** » Sun Mar 27, 2016 10:23 am

OK so N/A high compression pistons. And with boost you run higher boost to increase the compression.
I used to have fiat coupe turbos and that's what some people would do, use lower compression pistons and a big turbo. Some people were getting 400 bhp doing that. Shame the engines were partly build from pasta though :/

Post by **RattyMcClelland** » Sun Mar 27, 2016 11:08 am

Don't boost a stock h22. Just don't. Na only or rebuild the engine properly for boost.
From experience.

stinkypaul · Post by **stinkypaul** » Sun Mar 27, 2016 3:11 pm

I had wondered about that. I've read about a few people who seem to be turboing stock h22's. Makes sense not to.
What about a supercharger though, still a no no on stock?

Ludebob95 · Post by **Ludebob95** » Sun Mar 27, 2016 3:35 pm

Still a no no. If you want to boost with turbo or supercharger you will need to have new sleeves fitted to the block.

Lawman41 · Post by **Lawman41** » Tue Mar 29, 2016 3:04 am

Thanks for your help guys so general consensus is to go with h22a7 engine but i cant change engines so will stick with thr a5.

What is the CC on the ATR fuel injectors and should i use these or buy uprated fuel injectors, is so what CC is best?

Also what is the throttle body size on the OEM h22a8 engines(original engine of car) and would i need to upgrade this? I've been told to upgrade to 70mm throttle body? Also would you recommend to upgrade the fuel pump?

Some guidance on ECU needed as well, i dont know which one to get but have been recommended to Rich at performance autoworks for the mapping of the ECU. What is the best ECU and what can i expect to pay for the ECU and map?

Stinkypaul could you direct me to the topic with the performance parts please, im deffo interested.

Thanks again guys.

Post by **ek9sid** » Tue Mar 29, 2016 7:55 am

A popular upgrade is to fit s2000 injectors...worth looking into?