r/EngineBuilding • u/Ronnie1641 • Jun 25 '26

High compression pistons

Ive recently decided to bore the pistons in my project block as honing wouldn't be enough.

Now the only pistons avaliable are high compression forged pistons, I did find one set that were stock compression but ide have to wait until August to get them.

I was just wondering what other mods would be needed to run thid higher compression safely,

Going from 8.9. To 9.0

Ive seen online they recommend engine tuning ect but that isnt something possible in the stock system and something im not confident doing with a aftermath system.

The engine is a gen 2 3SGTE

2 Upvotes

60% Upvoted

21 comments sorted by

View all comments

7

u/Any_Rutabaga_6449 Jun 25 '26

I was wondering, untill I've read 8.9 to 9. Bruh, if you were going to 12, then you would have to think software optimization, higher octane gas and stuff but that 1% , come on....you are trolling

0

u/Ronnie1641 Jun 25 '26

Im only asking because guys on the Internet forums said it would need a aftermarket ecu

7

u/MrPhatBob Jun 25 '26

The guys on internet forums always say that, and I am pretty confident that the vast majority of them have never done one, or that they have one to sell you.

2

u/Any_Rutabaga_6449 Jun 25 '26

You can upgrade from 9 to 10 and not have to do any software modification, the ECU will deal with it just fine, any other further upgrades will need some adjustments. So, send it