89 CRD D15b2 upgrades

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New Member
I have a 89 CRX D15b2 and I'm looking for help with affordable upgrades.
I've looked for a while now but can't find a thread that helps with affordable upgrades.
I understand there are many updates out there but I'm specifically looking for upgrades that will improve gas mileage and or power.

Yes I understand more power usually means less MPG....

I appreciate any help, and if there is a thread out there please let me know. Thanks!
If you want performance and efficiency, then the motto you need to familiarize yourself with is:

"Simplify, then add lightness"
- Colin Chapman

Low drag
Awesome, thank you for the help! If anything else comes to mind please feel free to let me know!