Which Turbo Has Higher Chance Of Detonation? Rb20 10psi Vs Rb25 7psi?

[admS15]

Did you say low compression ratio? Maybe I missed it.

[niZmO_Man]

It was like 7:1

[Piggaz]

7.8:1.

[Dose Pipe Sutututu]

if only they installed an intercooler on those old VLs back then, could have run higher compression and better dose with more boost

[AngryRB]

They kicked ass even in stock form, can remember hosing off V8's daily few bottles of octane booster used though lol..

[admS15]

They kicked ass even in stock form, can remember hosing off V8's daily [emoji106] few bottles of octane booster used though lol..

Your not wrong. Back in the day they where 1 of the only cars I would think twice about dragging in my rx4 coupe which was a pretty quick little thing. Stock ones I would beat but modded would get me.

[niZmO_Man]

7.8:1.

low comp pistons + fat head gaskets = more boost = more dose

[R33 Jared]

Just to follow up on this post; I finished re-installing the RB25 back to it's original form tonight. I am running the stock R33 Airbox and snorkel, stock RB25 T28, stock turbo inlet pipe, no FMIC/SMIC and modified the heat shield from the aspirated headers to hide any elements of the turbo. Has a 2.5" X-Force so the turbo sounds are manageable and tomorrow I will inspect the plugs to see if any detonation has occurred. Thanks for the tips from everyone.

Edited April 6, 2016 by R33 Jared