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I need help tuning my 90 vert N/A

Old 06-14-12, 08:33 AM
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NY I need help tuning my 90 vert N/A

Hey guys. Im somewhat new to the rotary engine and I could use some help tuning it. I just had the motor rebuild 6k ago here is whats inside.

Front and rear S5 Irons, S5 T2 middle Iron
(2) S4 T2 Rotor housing's Slightly ported
(2) S4 9.4 Rotors
(1) S4 Counter Weight
RA classic Apex Seals/ and Springs
And Viton engine Seal kit.
Also a Racing Beat Streetable Header
Test Pipe (Cat Delete)
All emissions removed.
Its Still a 6 port engine (sort of)
You guys wont like this but the VDI is wired closed for low end torque
Also the 5th and 6th ports are wired open.
Stock Airbox
Stock everything else.
Everything else is S5 as its a 90 vert

Comming Soon:
But in my defense a S4 intake will be coming soon to eliminate the VDI
Also S5 TII 550cc injectors will be coming soon for secondaries.

I would like help tuning my current setup as well as help when the new setup arrives
Old 06-14-12, 12:01 PM
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with the VDI closed you loose over 5000rpm, with the 6 ports open you loose under 5000rpm... the best way is to hook those up so they work....

the T2 injectors aren't needed, the stock injectors are plenty
Old 06-14-12, 01:05 PM
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NY reply

Well the sleaves were completely removed from the 6ports and my complete lower/mid/upper and throttle body from an S4 will be comming shortly so im not concerned with VDI. Also over the winter I will be boosting my engine. I just want to get the most out of it for the summer. Also I will be getting a haltek over the winter.

As far as the injectors go the guys who built my motor on here Josh Long Longsturbo fb has an s4 NA with 550cc TII injectors in the secondaries and it made a big difference. Everything else on the car is stock. So with exhaust work on my car as well as a nice cold air setup it definately will make a difference.

Any suggestion based on having the S4 intake and the 550cc sec inj.

Originally Posted by j9fd3s
with the VDI closed you loose over 5000rpm, with the 6 ports open you loose under 5000rpm... the best way is to hook those up so they work....

the T2 injectors aren't needed, the stock injectors are plenty
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