Stillen Headers on 370z

Funky370z · 03-07-2009, 12:15 AM

Here is a few shots of installing headers onto my 370z that I got from Stillen. The Install took place at my shop Relentless Rpm. I will post up some more pictures along with a baseline dyno and a post dyno. My base line dyno pulls vary between 279.6hp and 283.6 peak hp. Next week I will do some after runs with just the headers. I am also working on our own catch can and will post up some install photos of that.

One Place i see a lot of gains to be made is in the y-pipe area as it gets very narrow after the cat.

Two words of caution, Nissan made one cat nut super tight on each side and we ended up breaking a stud on each side that we need to use the heat wrench on, and also it appears nissan cross threaded the a/f sensors on my car. Luckily I had a die to retread the a/f sensor to install into the stillen headers.

If you guys want more pics of the installed piece i can through it back on the lift come monday, I am going to enjoy this weekend off.

kgreen · 03-07-2009, 12:29 AM

have you driven it since the install?

Funky370z · 03-07-2009, 12:33 AM

Quote:

Originally Posted by kgreen

have you driven it since the install?

Yes, my butt dyno says more, but I had to finish some customer work today and installed a lsd into a co workers 350z so i was limited on time to dyno it today.

M.Bonanni · 03-07-2009, 01:04 AM

Nice! Those bolts are rediculous. I broke a socket and two extensions on those bastards when I installed my HFCs.

Frick@DDM · 03-07-2009, 02:23 AM

Looking Good, Dyno!?

LiquidZ · 03-07-2009, 02:48 AM

More pictures please!

Did you happen to snap shots of the merge collectors before you put them on?

Funky370z · 03-07-2009, 08:04 PM

Quote:

Originally Posted by LiquidZ

More pictures please!

Did you happen to snap shots of the merge collectors before you put them on?

you know what i did not but they are very clean.

These are g37 headers but the OEM part numbers match 370z/g37.

I should have post dyno numbers next week. Josh and Kyle at Stillen were a big help with this.

Funky370z · 03-07-2009, 08:05 PM

Quote:

Originally Posted by DDMotorsports

Nice! Those bolts are rediculous. I broke a socket and two extensions on those bastards when I installed my HFCs.

Matco makes a 36inch ext with a 1/2 female and 3/8 male end that you can use with a breaker bar and a deep 14mm swivel. We had to use the torch to get the studs out.

Supergoji · 03-07-2009, 08:29 PM

so they fit in there with no problems??

how long did the install as in how long did it take to get the headers in.

did you guys try chemicals to get rid of the orange crap on all the nuts and bolts?

kustomZ · 03-08-2009, 03:23 AM

Looks good

semtex · 03-08-2009, 12:43 PM

Wow! I'm definitely keeping an eye on this thread now that I've got the Stillen Cat-back and Berk HFCs in already. Headers would be a good next step! Great job, and thanks for the pics!

RCZ · 03-08-2009, 02:12 PM

I'm also looking at this with lots of interest. I think Im going to be sending a lot of cash Stillen's way when everything is out.

LiquidZ · 03-08-2009, 03:48 PM

Quote:

Originally Posted by RCZ

I'm also looking at this with lots of interest. I think Im going to be sending a lot of cash Stillen's way when everything is out.

Same hahaha

tvfreakazoid · 03-08-2009, 08:57 PM

Cant wait what power gains you get.

Funky370z · 03-09-2009, 09:51 PM

i made a ton more up high but lost mid range which i feel can be gained with more exhaust work. Dyno charts will be up tomorrow i forgot my jump drive at home today.

03-07-2009, 12:15 AM	#1 (permalink)
Funky370z Base Member Join Date: Feb 2009 Location: florida Posts: 65 Drives: 370z Touring Sport Rep Power: 256	Stillen Headers on 370z Here is a few shots of installing headers onto my 370z that I got from Stillen. The Install took place at my shop Relentless Rpm. I will post up some more pictures along with a baseline dyno and a post dyno. My base line dyno pulls vary between 279.6hp and 283.6 peak hp. Next week I will do some after runs with just the headers. I am also working on our own catch can and will post up some install photos of that. One Place i see a lot of gains to be made is in the y-pipe area as it gets very narrow after the cat. Two words of caution, Nissan made one cat nut super tight on each side and we ended up breaking a stud on each side that we need to use the heat wrench on, and also it appears nissan cross threaded the a/f sensors on my car. Luckily I had a die to retread the a/f sensor to install into the stillen headers. If you guys want more pics of the installed piece i can through it back on the lift come monday, I am going to enjoy this weekend off.

03-07-2009, 01:04 AM	#4 (permalink)
M.Bonanni The370Z.com Sponsor Join Date: Nov 2008 Location: Las Vegas Posts: 2,575 Drives: Fast Rep Power: 1321	Nice! Those bolts are rediculous. I broke a socket and two extensions on those bastards when I installed my HFCs. __________________ MikeBonanni.com Twitter: http://www.twitter.com/MikeBonanni Facebook: http://www.facebook.com/MBonanni36 Function > Form

03-07-2009, 08:29 PM	#9 (permalink)
Supergoji Enthusiast Member Join Date: Dec 2008 Location: Westchester NY Age: 36 Posts: 311 Drives: Z32tt / Supra tt Rep Power: 257	so they fit in there with no problems?? how long did the install as in how long did it take to get the headers in. did you guys try chemicals to get rid of the orange crap on all the nuts and bolts? Last edited by Supergoji; 03-09-2009 at 11:34 AM.

03-08-2009, 03:23 AM	#10 (permalink)
kustomZ Base Member Join Date: Mar 2009 Location: Texas Posts: 112 Drives: TBD Rep Power: 256	Looks good __________________

03-08-2009, 12:43 PM	#11 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Wow! I'm definitely keeping an eye on this thread now that I've got the Stillen Cat-back and Berk HFCs in already. Headers would be a good next step! Great job, and thanks for the pics! __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

03-07-2009, 12:29 AM	#2 (permalink)
kgreen Enthusiast Member Join Date: Feb 2009 Location: EL Paso, Tx Posts: 387 Drives: SR 370z Rep Power: 243	have you driven it since the install?

03-07-2009, 02:23 AM	#5 (permalink)
Frick@DDM The370Z.com Sponsor Join Date: Feb 2009 Location: San Diego Posts: 71 Drives: Danger Ranger Rep Power: 16	Looking Good, Dyno!?

03-07-2009, 02:48 AM	#6 (permalink)
LiquidZ A True Z Fanatic Join Date: Nov 2008 Location: Columbus, OH Posts: 1,940 Drives: Mag. Black 2009 370Z Rep Power: 705	More pictures please! Did you happen to snap shots of the merge collectors before you put them on?

03-08-2009, 02:12 PM	#12 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	I'm also looking at this with lots of interest. I think Im going to be sending a lot of cash Stillen's way when everything is out.

03-08-2009, 08:57 PM	#14 (permalink)
tvfreakazoid A True Z Fanatic Join Date: Jan 2009 Location: kommie kali Posts: 1,238 Drives: 2015 Audi S5; 6spd. Rep Power: 10324	Cant wait what power gains you get. __________________ Mudders milk

03-09-2009, 09:51 PM	#15 (permalink)
Funky370z Base Member Join Date: Feb 2009 Location: florida Posts: 65 Drives: 370z Touring Sport Rep Power: 256	i made a ton more up high but lost mid range which i feel can be gained with more exhaust work. Dyno charts will be up tomorrow i forgot my jump drive at home today.

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