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Saw this and thought of this build

https://www.thedrive.com/news/stage-5-harbor-freight-predator-with-a-turbo-and-efi-is-the-final-boss-of-go-kart-engines

i usually just wipe it down with alcohol before soldering, the solder i use has flux in it. if i added any additional flux it was probably the oatey stuff that comes in the little pastic tub

What you use to clean the board 4yrs ago, and what you use for solder back then?

The fuhrer convinced me again

More truck issues. I've been fighting a weird 5v ref volatge spike in my megasquirt lately. I bought all the components to completely replace the 5v circuit on te board but when i opened up the case i found the FET driver circuit for my Audi ignition coils was all corroded. The plugs that attach the main board to the daughter card were pretty rusty too. The 5v circuit looked fine but i replaced everthign anyways.  I spent the better part of saturday removing the ignition drivers off the board, scrubbing every spec of corrosion off and replacing both circuits. I also got rid of the connectors and hard wired the ignition drivers stright to the daughter card. I sprayed and wiped down everything with deoxit cleaner/protector before putting it back together to hopefully protect it in the future. I added that circuit 4 years ago almost to the day and I have no idea what got in there to cause the corrosion. I took it for a short drive and it seems to run better but i have not yet checked the data logs see if the voltage issue has been taken care of. .

Update 2 more site covers vehicles 1960 thru 2025
https://lemon-manuals.la
https://lemon-manuals.org.ua

I've always hated the CS line of alternator, Denso based 110amp alts I get off of fleebay never let me done.

My truck is definetly cursed, I got the head on, seems like it running great. Im redoing my base tune so i can drive it around until i get in for my new power tune. I found my tps signal is freaking out causing it not to go into closed loop idle or lean out during cruising and will randomly command accel or decel enrichment. I was planning on finding the problem last weekend but when i fired my truck up to pull it in the shop to put the scope on the tps the main voltage dropped from 14.7-12.3 because the alternator stopped charging. I was so sick of the garbage CS130s that keep breaking(this one makes the 4th time the alternator has failed since August 2025).  The FD RX-7 has the same mountings as the original kia one but is 100amps. I picked one up from autozone and it was dead right out of the box. I ended up swapping back to the original Kia alternater that was original to my 1999 engine. How the hell does a 27 year old kia alternator from pick-n-pull still work fine but I cant get a new one to last more than 30 days. I'm back on the road for now, I just can't run the A/C til the 200 amp new one gets here from powerbastards.

I dont know how i can have so many issues with new parts that are absolutely garbage.

thanks for coming to my rant.

Sent it for free

side hustle now just case im bored and i like to build them, when i get bored of building them im going to just increase the price

i also got a minbike youtube guy to do a review, i sold quite a few after that

https://www.youtube.com/watch?v=U364d0ukS_w

Awesome did the reviewer get a break on cost on an engine or free fitty?