So what mods, parts, etc. are you looking for???
New Member
Joined: Aug 2010
Posts: 13
From: Texas
Something for you guys to consider regarding the test-pipe....a less restrictive exhaust is going to drop your torque and mid-range HP...making for a less enjoyable daily driven car. The benefits of a free flowing exhaust don't show until above RPM...and then it's even minimal...like only 2-3 HP.
And before you say "something is better than nothing..." I would argue that the 2-3 TQ and 3-4 mid range HP you lose are waaaaay more important than the 2-3 HP gained up top.
I don't believe the WR dyno results...if the L15a7 really was so exhaust-restricted then you should see significant gains even with an axleback.
I will post the Honda Tuning dyno results...
And before you say "something is better than nothing..." I would argue that the 2-3 TQ and 3-4 mid range HP you lose are waaaaay more important than the 2-3 HP gained up top.
I don't believe the WR dyno results...if the L15a7 really was so exhaust-restricted then you should see significant gains even with an axleback.
I will post the Honda Tuning dyno results...
Member
Joined: Apr 2010
Posts: 1,316
From: Minnesota
Marko just posted this Dyno graph in the tuning subforum...
The green line represents gains after adding a header...this is quite shocking. You really never see this type of gain from a header upgrade on OEM cams.
The green line represents gains after adding a header...this is quite shocking. You really never see this type of gain from a header upgrade on OEM cams.
Member
Joined: Apr 2010
Posts: 1,316
From: Minnesota
No, Weapon R won't reveal their dyno
...just the numbers. They quoted me something like 10 TQ and 10 WHP but didn't mention where in the power band. If true, this would be the largest gain I've ever seen from a header.
BTW...just ordered my PRM intake. I can't wait to repeat my 0-60 and 1/4 mile times once it arrives.
I also got the DIY axle-back...maybe it's all in my head but I feel like I lost some low end TQ
...just the numbers. They quoted me something like 10 TQ and 10 WHP but didn't mention where in the power band. If true, this would be the largest gain I've ever seen from a header.BTW...just ordered my PRM intake. I can't wait to repeat my 0-60 and 1/4 mile times once it arrives.
I also got the DIY axle-back...maybe it's all in my head but I feel like I lost some low end TQ
I was weighing between getting the WR header or the T1R mid-pipe. If WR's claim ain't bs... then I'll go with a WR + stock mid-pipe + Tanabe Touring M setup
gawd darn... I just might go ahead and pull the trigger on PRM too. let us know how it goes, I just ordered the MAF tube from bernardi last night and would try Lyon's intake mod.
gawd darn... I just might go ahead and pull the trigger on PRM too. let us know how it goes, I just ordered the MAF tube from bernardi last night and would try Lyon's intake mod.
PM them. that's the only way they'll reveal the results...well, that's what i was told...!
Member
Joined: Apr 2010
Posts: 1,316
From: Minnesota
This is the dyno they sent me...it just seems too good to be true for a bolt on. Absolutely no dips below baseline anywhere in the power curve...I have never seen a header produce such a dramatic increase in TQ "area under the curve." Usually headers only produce increases in high RPM HP cause this is usually when the OEM exhaust is flow limited.
Last edited by blackndecker; Oct 6, 2010 at 04:06 PM.
Member
Joined: Apr 2010
Posts: 1,316
From: Minnesota
I'm still hoping to chip in to offset the cost of someone taking on this project. Depending on how many people are in, we may have to chip in a little more than $10. I think 3-dyno runs averages $60-100. It would be cool if we were able to pay the entire dyno cost if someone purchased this "header."
I believe it was Baylorbro (aka thefit09) who we worked this tentative deal with...
the only way they would admit or discard or clarify anything is when those dynos are going to be circulated around FIT/HONDA forums and then scrutinized... then and only maybe then, they would start talking 
This is the dyno they sent me...it just seems too good to be true for a bolt on. Absolutely no dips below baseline anywhere in the power curve...I have never seen a header produce such a dramatic increase in TQ "area under the curve." Usually headers only produce increases in high RPM HP cause this is usually when the OEM exhaust is flow limited.
The torque graph is suggesting to me that they tuned the runner lengths for low and mid range torque which is easy enough to do, and would frankly make this part more appealing to people who DD their Fits.
What this means is by default it will create more horsepower up top because HP is derived from torque over time.
I would like to see the test unit they used and the configuration it was tested on, as well as atmospheric conditions on site. There could be quite a fudge factor there..
Member
Joined: Apr 2010
Posts: 1,316
From: Minnesota
I agree, especially since some have discovered that the ECU often corrects for modifications with no additional electronic calibration.
The torque graph is suggesting to me that they tuned the runner lengths for low and mid range torque which is easy enough to do, and would frankly make this part more appealing to people who DD their Fits.
What this means is by default it will create more horsepower up top because HP is derived from torque over time.
I would like to see the test unit they used and the configuration it was tested on, as well as atmospheric conditions on site. There could be quite a fudge factor there..
The torque graph is suggesting to me that they tuned the runner lengths for low and mid range torque which is easy enough to do, and would frankly make this part more appealing to people who DD their Fits.
What this means is by default it will create more horsepower up top because HP is derived from torque over time.
I would like to see the test unit they used and the configuration it was tested on, as well as atmospheric conditions on site. There could be quite a fudge factor there..
The 4 gauges in kPa are tire pressure I'm guessing.. which seems low 224kPa = ~34psi.
But having a tire temperature reading at each corner is some impressive telemetry for a Fit.. (46*C = 115*F) I would love this for longer trips. After an 8 hour drive @ 70mph up to a cabin on the WI/MI border for a hunting trip last month, steam was just pouring out the wheel wells when we stopped in town for gas
Where do you see TPS readout?
But having a tire temperature reading at each corner is some impressive telemetry for a Fit.. (46*C = 115*F) I would love this for longer trips. After an 8 hour drive @ 70mph up to a cabin on the WI/MI border for a hunting trip last month, steam was just pouring out the wheel wells when we stopped in town for gas
Where do you see TPS readout?