Getting 300hp out of my stock HR
08-23-2016, 03:59 PM
#1
Getting 300hp out of my stock HR
What's up guys,
Been reading up on here about getting around 300hp out of my HR with bolt on's.
I read PPE headers, exhaust, CAI, tune etc would do it. I wanted to see if I could accomplish around 300hp with the following:
- Art Pipes w/stock exhaust or maybe some headers with the Art pipes?
- CAI
- Uprev tune
Now with the ART pipes, would the tune possibly fix the yearly smog check issue or would I have to swap out my ART's with the stock cats for the smog?
Been reading up on here about getting around 300hp out of my HR with bolt on's.
I read PPE headers, exhaust, CAI, tune etc would do it. I wanted to see if I could accomplish around 300hp with the following:
- Art Pipes w/stock exhaust or maybe some headers with the Art pipes?
- CAI
- Uprev tune
Now with the ART pipes, would the tune possibly fix the yearly smog check issue or would I have to swap out my ART's with the stock cats for the smog?
08-23-2016, 04:28 PM
#4
i know in texas as long as you didnt have a check engine light you are good. the tuner put the downstream sensors in a state, think it was not ready or something. here you can have 2 not ready (or whatever it was) sensors
do y'all have a visual inspection, tailpipe rape, or just obd2?
do y'all have a visual inspection, tailpipe rape, or just obd2?
08-23-2016, 04:30 PM
#7
General & DIY Moderator
MY350Z.COM
MY350Z.COM
iTrader: (64)
^^Agreed. Depending on the dyno and how it's operated, OP may or may not see 300 hp. My HR powered race Z has test pipes, single outlet muffler and was UpRev tuned on 100 octane race fuel over 40 pulls. It still "only" made 290 hp. And yes, the ART pipes would need to be replaced with cats to pass emissions (depending on whether Nevada standards are anything close to Colorado).
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08-23-2016, 04:38 PM
#9
Our inspection here if your 02 sensors are not ready or whatever the hell you will automatically fail and you car could get flagged for a super special inspection... Massachusetts is not modified car friendly. Actually last time I asked the guy said 1 not ready and you might pass still if the technician wants to be nice.
08-23-2016, 07:27 PM
#11
New Member
Made 292 WHP
Moral of the story is round up
Moral of the story is round up
08-25-2016, 02:57 PM
#19
Every HR I have seen with berk HFCs and a dual exhaust always pulls 295-300. (80-90deg in FL)
I've never seen a intake/exhaust bolt on car with test pipes hit 300.(Just a CAI not porting or 3")
I wish I had money to test it my self, but something tells me these engines hate test pipes, and really hate 2.25"->2.5" step ups in the cat area (90% of all test pipes). There is far to much consensus about mods. Everything needs to be set up to work with each other.
LTH are a great example of this. Are they better than stock cats? You bet. But I never see them make more power then Berk HFCs. EVERY high power NA Z I have seen (Sashas 400+HP car included) Have a mid length header. The ones that Motordyne had up at Zdays were like this as well. Motordynes ART pipes are also properly sized for stock headers, just like the Berks.
Flow doesn't matter if you hemorage velocity. Bigger isn't always better.
I've never seen a intake/exhaust bolt on car with test pipes hit 300.(Just a CAI not porting or 3")
I wish I had money to test it my self, but something tells me these engines hate test pipes, and really hate 2.25"->2.5" step ups in the cat area (90% of all test pipes). There is far to much consensus about mods. Everything needs to be set up to work with each other.
LTH are a great example of this. Are they better than stock cats? You bet. But I never see them make more power then Berk HFCs. EVERY high power NA Z I have seen (Sashas 400+HP car included) Have a mid length header. The ones that Motordyne had up at Zdays were like this as well. Motordynes ART pipes are also properly sized for stock headers, just like the Berks.
Flow doesn't matter if you hemorage velocity. Bigger isn't always better.
Last edited by NiLL; 08-25-2016 at 02:58 PM.
08-25-2016, 04:14 PM
#20
Every HR I have seen with berk HFCs and a dual exhaust always pulls 295-300. (80-90deg in FL)
I've never seen a intake/exhaust bolt on car with test pipes hit 300.(Just a CAI not porting or 3")
I wish I had money to test it my self, but something tells me these engines hate test pipes, and really hate 2.25"->2.5" step ups in the cat area (90% of all test pipes). There is far to much consensus about mods. Everything needs to be set up to work with each other.
LTH are a great example of this. Are they better than stock cats? You bet. But I never see them make more power then Berk HFCs. EVERY high power NA Z I have seen (Sashas 400+HP car included) Have a mid length header. The ones that Motordyne had up at Zdays were like this as well. Motordynes ART pipes are also properly sized for stock headers, just like the Berks.
Flow doesn't matter if you hemorage velocity. Bigger isn't always better.
I've never seen a intake/exhaust bolt on car with test pipes hit 300.(Just a CAI not porting or 3")
I wish I had money to test it my self, but something tells me these engines hate test pipes, and really hate 2.25"->2.5" step ups in the cat area (90% of all test pipes). There is far to much consensus about mods. Everything needs to be set up to work with each other.
LTH are a great example of this. Are they better than stock cats? You bet. But I never see them make more power then Berk HFCs. EVERY high power NA Z I have seen (Sashas 400+HP car included) Have a mid length header. The ones that Motordyne had up at Zdays were like this as well. Motordynes ART pipes are also properly sized for stock headers, just like the Berks.
Flow doesn't matter if you hemorage velocity. Bigger isn't always better.