This! Save your money and do it right the first time with trusted parts. Don't waste your money on eBay cheap POS that'll break and cost you more money. I think we can agree that we're happy to see OP asking vs some of the current "man I bought these parts they're so gud will follow up" followed by "oh shit I fucked my engine" threads that are around.
. Its at the shop now getting the timing service done.
You can max out the ko4 without needing ex mani or fmic. FMIC will help keep bats low during the summer so easier power. Hard intake "HTP 3.5" with e30 tune HPFP and downpipe will give you as much as the ko4 can do. Even with a bigger turbo such as CST4 I was making some jam on OEM TMIC, HPFP , Ebay DP, HTP 3.5 Intake. You really don't need much more than that to max out stock block and clutch. BTW The ebay knock off of the GFB response is pretty solid if you want more choo choo sounds.
e30 is More than enough for stock motor and once you start going pass that you have to worry about the spill valve getting black death. You will get all the timing/boost you need to max out the ko4, The other issue you start to run into running Ethanol is fueling headroom. It takes more fuel and the stock HPFP can only do so much. That is why everyone goes to a PI setup to compliment the DI. You need to decide on the power you are looking for and make decisions based on that. This platform has a lot of years on it and pretty much everything has been explored. I am all for people doing wild and crazy things but you can def find most of it already done using the googles.It already has the choo choo sounds aplenty. I was thinking about doing a full flex fuel conversion, since e85 is readily available in my area. We also have 90 octane full gas not blended with ethanol. But not sure it would be good to try or not.
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Don't forget the hpfp, have a bad time without upgrading that.
Good man! My buddy got a surprise when he bought his and went to do it, had upgrades in it, maybe you'll get lucky. Only way to know is open it up. His weren't CS or auto Tech so he replaced them anyway.
