guys i am sorry my father was rushed into the hospital on monday for emergency surgery and It has just been a whirl wind. I will post some graphs tomorrow when i get them pulled off my dyno computer. I have not forgotten. I will say I lost a lot of power through the mid range. I need to talk to someone at stillen about this.

Ryan

I was at 283 now I have 297 rear wheel peak HP

Ryan,

Sorry to hear about your father. Is he doing well?

Yea he is better, has been a rough few months. We just found out he has cancer and now this constant battle with his back(2 surgeries this month) is stressful on top of working almost 80-100 hours a week. :wtf2:

Family is definitely more important. I've undergone similar with my father.

Im sorry to hear that, hope everything works out well man. Priorities, go take care of him.

I hope he will be better

I'm sorry sorry to hear this. I recently lost a friend to cancer. It's a brutal thing. Best wishes to you and your family.

Sorry to hear about your father, cancer sucks.

By the way, what's the deal on gaskets for the headers? Does Stillen ship new gaskets for either side of them (or are the old ones re-usable at least on the engine side on a low-mileage car - or do I need to pick up some gaskets myself from a local parts place?). I guess I'll be calling them to ask about this tomorrow anyways.

I've got a ceramic-coated set due to arrive on Tuesday, and Berk HFCs sitting in my garage. I'm hoping to install both next weekend while I have access to a lift (I figure I may as well deal with the PITA cat removal just once) as my first major bolt-ons, and then deal with cat-back and intake at home without a lift later (still haven't decided on an intake anyways, although I'm leaning towards Stillen's G3 one once it becomes available).

Once all of that's in place, then I need to sort out getting the ECU tuned, either mail-order or maybe I can find someone who's good with a dyno here in Houston, we'll see.

Ok as far as the gaskets I reused mine with no issues.

Your In texas why not contact Uprev and have your rom dumped and tune your factory computer? We use uprev at my shop and until i am a sponsor i can not advertise prices on here.

Your going to find that the drivers side header is a major PIA but the passenger side is a walk in the park. A few pointers on the drivers side. The bolt at the front of the car use a 14mm on a swivel a 6ich ext then another swivel and another ext and a rachet and attack it through the wheel well... It will make sense when your there. The Bottom two rear bolts attack from underneath with a long 14mm rachet wrench. Also I have a very long 3/8 to 1/2 ext that you use a 14mm semi deep swivel on to remove the cat bolts. But in a good note the passenger side is a walk in the park.

One word of caution, is the 02 sensors in the factory manifold were a major PIA to remove. They were cross threaded at the factory. I have a 18x1.5??? Die at work i used to rethread them before putting them back into the stillen headers. If you need a few pointers PM me for my number and I can help you a bit over the phone.

And Guys thank you so much for your kind words about my father, he is going in for another surgery this week for his back, that will be three in the last month. The tumor has attacked his spine. Been tough around here between working long hours and helping care for him. I moved back home lately to help out.

As for my dyno charts I have not forgotten I have print outs here but at work right now it is hectic. We are building a rear mount turbo Titan for the Titan Show this weekend and we are cutting it very close, and throw on top of that a few 350z builds and a 240sx RB swap I am swamped.

If you guys want any custom parts made for the 370z that other vendors have not address let me know and I will present to the owner of our shop/dealership.

And If your in southwest Florida and want to stop by and just say hello feel free!!!

Ryan

I'm not at all familiar with how engine tuning goes on these cars other than what little I've read on this forum so far. What's the deal with the uprev? You buy their unit, log some data from it on some kind of standard drive, upload the data to them along with a description of your mods, and then download back a custom tune from them to put into the unit and then ultimately back into the car's ECU? Is it close enough (for a lightly-modded car, in any case) to a live dyno tune to make the dyno not worth it?

I'll print that out and take it with me this weekend. I think we have a set of tap+die stuff out there at the shop, so it shouldn't be an issue (the cross-threading).

Well he must be a good father, to have raised a son responsible enough to go home and help him out in a time like that. Good luck with the surgery.

upev is a way to tune a factory ecu. They are eagerly working through the 370 computers. Rich and Jarad over there are great guys. I would get all your bolt ons finished then do a tune, that is my plan.... I am still wondering how to tune the vvel i understand the concept as I been through the Nissan training on it, but how to maximize it with a not adjusting exhaust cam.

On a side note talked with Josh from stillen a bit today and i think the reason we are losing power in the midrange is due to the increased flow of the headers but the bottle necks in the factory y-pipe. I can not say enough how great there customer service is/has/ and no doubt will be.

LOL Uprev is the company, but the tuner software is called Osiris you data log with there programed called Cipher. Not as hard as i make it out to be. The first batch of370z roms are getting close to done.

Good post :tup:

-Hunter

This is exactly what I've been planning to do. Get my bolt-ons done, then use UpRev to do a tune. Re. losing power in the midrange, if it's due to the factory y-pipe, then I can only wonder what results I'd get if I hooked these babies up, given that I've already got the Stillen exhaust and Berk HFCs installed. Not sure I want to be the guinea pig on headers tho.