What you want to know? My intention was to fix my bad cold starts/hot starts.. Cold is perfect/Hot start is still at fail..

Waiting on a MAF to get to Henson Performance and get a re tune on Osiris(Protuner)/ removal of utec and sell utec!! Osiris would work on any engine built or not.. You either have to be a tuner/ or find a Osiris protuner.. I cant wait to remove the piggy back and have my ecu be able to control my car period..

 

^^^Okay, I thought you were already running an uprev maf and osiris tune. I am planning on doing the same thing on a 4.15 built motor with APS twin turbos running 8 -12 psi boost. It would be great to get rid of the Utec and not have to install extra O2 sensors for a standalone ecu. When you have the new maf and tune complete I would be interested in your opinion/review of Osiris as tuning system for forced induction.

 

Sounds good.. Ill keep you posted.. Hopefully in a few wks it will be done.. Ill be running 13-16 psi of SC boost.. plenum leak dependant..

 

So basically any SC or T car would need to replace the stock MAF?

 

No most FI cars are under 400hp, the stock motor doesn't do well at 400+. So only the people with built motors making 400+ are going to absolutely need the modified MAF sensor.

 

What about the HR MAF? because the HR's can do 500whp stock block.

 

HR has twin intakes and twin MAFs. Knowing Nissan, they are the identical parts with just that much more headroom because there are two. The stock HR motor has been rumored to handle more than 500whp, it just won't be pushed till there is a more stable tuning ability. Running piggy backs doesn't offer a stable enough tune generally to push the limits of the stock blocks, so we'll see once we release the HR updates.

Sam @ GTMotorsports seems real keen on making far more than 500whp once our software is available to use with his turbo kits on the HR and VHR.

 

ok i think i know the answer to this but for peace of mind i just want a simple yes or no asmwer.. i am saving for the aps st, i have supporting mods on stock engine, i do not plan to go over 400 rwhp ever!!.. can i tune it with osiris?

 

I'm not trying to speak for UpRev - but I have been told by my tuner "yes".

 

We can tune a completely stock vehicle to over 650whp. I'd claim we can do more than that but we're waiting on someone to build a car making more power than that to use the system on.

Shouldn't be an issue to tune your car with the APS single.