This is on the ICS Shop car with the following mods:
APS SR 56 Turbo
APS 65 mm Intake
Stock injectors
Aquamist HFS 5 alchy injection with two nozzels
TGV deletes
Big TMIC
3.5 " Turbo B ack APS Exhuast
Walbro fuel pump
AP 2 tuned by Dyno Flash
Today we added the Agency Power 4 into 1 header (similar to HKS design) and frankly I was amazed with the gains we recieved
NOTE - still on stock injectors and 65 mm MAF - but without a doubt at the MAX ! (Lots of meth injected)
I find this power level very impressive on a car with minor mods and pump gas
43HP and 25lbs torque
Just for reference - this comparision is with additional tuning which was required to realize some of the gains from the headers. With the reduction of back pressure we were able to run additional ingition timing and work further with the AVCS. About half of the extra power came from the tuning.
They look to be made in the same place as some other headers I have seen with the identical looking cast 4 into 1 collector - I think they are a good value for the price and thus far they have not cracked on my car
Now you can all understand why I'm such a big proponent of headers and why I'm planning on getting a set of the E-bay 2-piece for $120 shipped for my FXT! The E-bay 2 piece are the Agency power
Headers Make Big gains!
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Re: Headers Make Big gains!
I just want to point out, this is definitely NOT lightly modded.drwrx wrote: APS SR 56 Turbo
APS 65 mm Intake
Stock injectors
Aquamist HFS 5 alchy injection with two nozzels
TGV deletes
Big TMIC
3.5 " Turbo Back APS Exhuast
Walbro fuel pump
AP 2 tuned by Dyno Flash
That turbo flow's a very decent amount of air
The TGV deletes are a nightmare
The 3.5 inch exhaust is by no means normal. In fact, APS is the only company I know that makes one for Subaru's.
The gains were very high since they are able to flow SO much air through the other parts of the system. A stock STI that added these would see no where near these gains. Once you add a turbo, you will see a little higher gains, but none of us are running a setup like they are to see those gains.
Sabre (Julian)
92.5% Stock 04 STI
Good choice putting $4,000 rims on your 1990 Honda Civic. That's like Betty White going out and getting her tits done.
92.5% Stock 04 STI
Good choice putting $4,000 rims on your 1990 Honda Civic. That's like Betty White going out and getting her tits done.
- drwrx
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Re: Headers Make Big gains!
You are indeeed correct this is NOT a lightly modded car, despite what ICS and Big Al may claim, and only those with a turbo swap are going to get numbers like 43HP and 25lbs torque. However, every test I have seen on lightly modded (stage 2) cars puts unequal length headers around 12-14 whp and 16-18 ftlbs. And while a set of Gruppe-S or Agency power headers for $400 is a good buy, an ebay set for $120 is just a no-brainer. There is no other bolt-on part that can make such gains for the price. Also, headers have been proven lower exhaust gas temps, which is also a good thing in our cars.Sabre wrote: I just want to point out, this is definitely NOT lightly modded.
That turbo flow's a very decent amount of air
The TGV deletes are a nightmare
The 3.5 inch exhaust is by no means normal. In fact, APS is the only company I know that makes one for Subaru's.
The gains were very high since they are able to flow SO much air through the other parts of the system. A stock STI that added these would see no where near these gains. Once you add a turbo, you will see a little higher gains, but none of us are running a setup like they are to see those gains.
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