B20vtec JRSC

[RacetecLM]

Hi. I have this set Up
B20 block and cranck
Forged rods and nipon Racing p72 turbo pistons
B18c4 head with ITR cams
10,5:1 comp ratio
Jackson Racing supercharger
B20 pulley in the cranck and 3" pulley in the SC
+10psi

The intake temps are 93°C (200°F)


My tuner is very scary about the intake temps and the ignition timing is very low in the boost part. Watching in the hondata basemaps, the b18c5 with jrsc in the high speed ignition table at 8000rpm and 7,7psi is 27,5 advance
My tuner put 16,25 in his table

I know he wants safety but may be is too much safety?

Can somebody with Jackson Racing supercharger in the car say my his ignition tables? Not for use but for reference please...

[Spunkster]

The LHT intercooled manifold will help lower the temps substantially.

[RacetecLM]

Yes i know but i dont have it...

The question. The hondata basemaps for b18c5 with jr supercharger is with lht intercooler?

[Spunkster]

Yes, it was tuned on my vehicle.

[RacetecLM]

Ahhh ok. And without lht how much can be the ignition timing in your opinión?

[Spunkster]

It's hard to say as it has had the LHT for almost 20 years and I don't have any of the old data.