1.10 housing or .90 for S475

[ecc_33]

I have been running a S475 for awhile now with a 1.10 housing. I am changing the WHOLE setup now. Im going from 4.56 gears back to 3.73's. And adding 60 over injectors with a built engine. The turbo was originally built for a 2.6 class for truck pulling. Now all I will do with the truck is run the 12.0 index class and drive the truck. The charger was laggy with the 1.10 housing and sucked for spooling without aid from watermeth or nitros. Im blaming that on the gears but didnt know how much difference it would be going to a .90 exhuast housing? On edit the turbo has been opened up from a 2.6 inducer to a 3.0

 

[dmaxfireman]

single stock cp3 .9 modded single cp3 or duals 1.1

 

[Gmclbz]

I changed from a .9 to a 1.10 and I won't go back...I have no issues with spooling.

 

[SSchmi5519]

I changed from a .9 to a 1.10 and I won't go back...I have no issues with spooling.

Everyone has a different experience/opinion of what is acceptable spool. Terrain and driving conditions also have a lot to do with it. For instance I run the .9 on a 472 and wish the spool was much faster.

 

[Gmclbz]

Everyone has a different experience/opinion of what is acceptable spool. Terrain and driving conditions also have a lot to do with it. For instance I run the .9 on a 472 and wish the spool was much faster.

Spool depends on tuning also...

 

[SSchmi5519]

Spool depends on tuning also...

It does for sure, but moreso opinion. Mike L. was very impressed with the spool when he drove it, but in my opinion it is too slow for hot-street or towing.

 

[Gmclbz]

It does for sure, but moreso opinion. Mike L. was very impressed with the spool when he drove it, but in my opinion it is too slow for hot-street or towing.

Twins would be the ideal street or towing setup.

 

[SSchmi5519]

Twins would be the ideal street or towing setup.

Triples even...

 

[Evan@InglewoodTrans]

I wish now that I had went with a 1.0 instead of the .90 housing and will be switching to one for next year.

 

[paint94979]

My 1.0 S475 spooled great... Are we talking about an 83 or 87?

 

[hondarider552]

Triples even...

How did my twins spool steve? I think their alright...

 

[bullfrogjohnson]

You will gain about 100 rpm quicker spool between each housing. Your turbine wheel plays a bigger roll than the housing. I run a 1.25ar housing with the same gears and have no complaints:thumb: I have also tested a couple fo them

 

[SSchmi5519]

How did my twins spool steve? I think their alright...

Freaky fast :Charger:

 

[LBZrcks]

I changed from a .9 to a 1.10 and I won't go back...I have no issues with spooling.

What did you gain by going to the bigger housing?

 

[kivetts04dmax]

with a lift pump and nozzles will you really be able to tell the difference in spooling a .9 and a 1.1?

 

[Gmclbz]

What did you gain by going to the bigger housing?

Power and less drive pressure...

 

[Dirtymaxx03]

Power and less drive pressure...

How much more boost did the 1.10 give you over the .90?

 

[paint94979]

How much more boost did the 1.10 give you over the .90?

Why would going to a larger housing give you more psi?

 

[Dirtymaxx03]

well i figured the looser housing would let more exhaust drive the turbine, creating more boost presure....no?

 

[LBZrcks]

Guess I should hook up my Drive Pressure Gauge and adjust my wastegate.