HPFP or Downpipe if you had to do one?

[Reggie Dunlap]

Looking for feedback on above subject line. Looking for continued improvement on low end results. Would love to do both but at this time have to choose one. APR stage 1 otherwise stock 2009 B7A4 Cab

Thx

[Shanster]

I'd go both

[Reggie Dunlap]

Wish I could but I cant pick one? and why :)

Thx

[vce1232000]

DP. It will improve spool time on the low end. HPFP mod will yield you slight upper midrange to high end rpm gain.

[konarider94]

To get to a point where fueling is the limiting factor you should have the downpipe first. If you don't have a need for more fuel supply upgrading the pump wont do anything.

[Reggie Dunlap]

Much appreciated......Like the list of your improvements...impressive and an avant no less NICE!!!

[aluthman]

I would vote hpfp. I noticed a decent improvement in mid-range power even without a tune. My downpipe went on with the new turbo, so I can't say how much gain there was from it.

[konarider94]

I would vote hpfp. I noticed a decent improvement in mid-range power even without a tune. My downpipe went on with the new turbo, so I can't say how much gain there was from it.

That seems unlikely. In order for that to happen your car would have to be leaning out or experience fuel cuts for some reason. This is my AFR with the stock pump. The ability to push more fuel isn't going to help anything.

[aluthman]

Unlikely as it may be, my powerband definitely felt "fuller" and I'm not the only one who has noticed this.

[Axis]

To get to a point where fueling is the limiting factor you should have the downpipe first. If you don't have a need for more fuel supply upgrading the pump wont do anything.

X2 I dont see why there would be gains from an HPFP if you dont have the tune to use it. Removing the oem bottle neck cat and replacing it with an HFC in the other hand will be significant.

[krewbrew]

DP. It will improve spool time on the low end. HPFP mod will yield you slight upper midrange to high end rpm gain.

This^. Unless you are having hpfp issues a HFC will bring more low end gains for less cost.

[Sanjman]

If you don't have a HFC or TP I'd go with the HPFP, DP may feel better, it just won't do justice until you open it up between the DP and the Turbo

[james12lucy]

Looking for feedback on above subject line. Looking for continued improvement on low end results. Would love to do both but at this time have to choose one. APR stage 1 otherwise stock 2009 B7A4 Cab

Thx

I've done both, plus some other things... I would highlight suggest opening up your exhaust system first.

Think of your engine as a big air pump; ultimately, its main job is to get air in and out as quickly and efficiently as possible. The quicker air exits, the quicker it can enter. Opening your exhaust is the very first mod I would suggest; go with a test-pipe if you can. It'll save you the hassle of there being a limit of you decide to go bigger later.

Once your engine is inhaling and exhaling efficiently, you can start adding fuel. You'll see much larger gains with an HPFP and tune with a free breathing engine. I'm not going to shill one test pipe over another, but mine passed tight Ontario emissions standards without an issue.

And let's face it; you can buy a new test pipe for half the cost of a used HPFP...

Cheers!


_____________________________________

B7 2.0T 6MT Avant. JHM test pipe, APR Carbonio Intake, 034 TIP, S3 injectors, APR HPFP, Stasis Cat-back, Eurojet billet VC, 42DD catch can, OEM black optic RS4 grill, RNS-E, JHM 93 Octane Stage 2, R8 Coils, RS4 rear sway bar, Stern engine mounts, Akipol rear diff mount.

More to come.

[Charles.waite]

The HPFP will only help if you get a tune that will take advantage of it. Its not just a magical "swap it out and get 20hp on the top end" thing.

Just wanted to clarify since I hadn't seen it mentioned.

A DP will help because it removes a restriction behind the turbo and lets it spool quicker.

[Axis]

The HPFP will only help if you get a tune that will take advantage of it. Its not just a magical "swap it out and get 20hp on the top end" thing.

Just wanted to clarify since I hadn't seen it mentioned.

A DP will help because it removes a restriction behind the turbo and lets it spool quicker.

Ahem :P

X2 I dont see why there would be gains from an HPFP if you dont have the tune to use it. Removing the oem bottle neck cat and replacing it with an HFC in the other hand will be significant.

[Charles.waite]

Ahem :P

Pssshhh. Ain't nobody got time to read posts!!

[Okedokey]

^lol

[vce1232000]

Much appreciated......Like the list of your improvements...impressive and an avant no less NICE!!!

U.......

[aluthman]

Just buy a used test pipe and used hpfp and don't look back.

[vce1232000]

Just buy a used test pipe and used hpfp and don't look back.

It mite be OP lucky day to +Save $$$$$$. ktish is parting back to stock. He's selling JHM HPFP mod, JHM Y DP, JHM Test pipe, Stock S4 exhaust on the reasonable. Go Stage 2+ for fraction of the $$$$ http://www.audizine.com/forum/showth...eadlights-cash you can this thread to PM him

[reno808]

why not just save your money? you wont gain much with just those two. If you get any of those two, you will need a tune and your back to spending money again....

[aluthman]

why not just save your money? you wont gain much with just those two. If you get any of those two, you will need a tune and your back to spending money again....

Be quiet mom!

[vce1232000]

why not just save your money? you wont gain much with just those two. If you get any of those two, you will need a tune and your back to spending money again....

He has APR tune. All upgrades up to 2+ from stage 1 would be no charge from APR

[Okedokey]

MOAR MODS!!!

[Charles.waite]

He has APR tune. All upgrades up to 2+ from stage 1 would be no charge from APR

No charge from APR + shop fees (usually $50-100)

[vce1232000]

No charge from APR + shop fees (usually $50-100)

The shop I use http://www.driveautoworks.com/ doesnt charge labor to tunes or upgrade them if free from APR

[vce1232000]

MOAR MODS!!!

Go BIG or Go Home. Is what I say

[Charles.waite]

The shop I use http://www.driveautoworks.com/ doesnt charge labor to tunes or upgrade them if free from APR

Lucky. My local APR dealer (achtuning) charges $50 for shop time for tune upgrades.

[ktish]

He has APR tune. All upgrades up to 2+ from stage 1 would be no charge from APR

What use are getting the mods if the software isn't there to back it up?

As much as I would love to take his money, $600 would be better spent just getting a stage 1 tune from JHM. They'll give you a free upgrade to stage 2/2hpfp too

[Okedokey]

He already has a tune.

[vce1232000]

What use are getting the mods if the software isn't there to back it up?

As much as I would love to take his money, $600 would be better spent just getting a stage 1 tune from JHM. They'll give you a free upgrade to stage 2/2hpfp too

"APR stage 1" otherwise stock 2009 B7A4 Cab

....lol

[ktish]

He already has a tune.

Well aware my friend.

https://www.youtube.com/watch?v=drZnBKY-p9E

[aluthman]

He meant that APR's tune sucks.

[brandonpham]

The shop I use http://www.driveautoworks.com/ doesnt charge labor to tunes or upgrade them if free from APR

Primemotoring doesn't either. Always in my area man!

[Charles.waite]

He meant that APR's tune sucks.

Yuuuuuuup.

[vce1232000]

He meant that APR's tune sucks.

.....

[aluthman]

.....

Says the guy jumping ship from APR to JHM lol

[Jake@JHM]

.....

Says the guy jumping ship from APR to JHM lol

Speaking of which.. When are you going to send me that code readout from VCDS, vce? lol

[vce1232000]

Speaking of which.. When are you going to send me that code readout from VCDS, vce? lol

I figured you come out from your cubicle soon with that one...lol Actual Ive been so busy on other projects

http://forums.vwvortex.com/showthrea...-VW-Rabbit-GTI

http://forums.vwvortex.com/showthrea...laway-Re-Build

Im going to Drive Auto Works on Thursday to get the coding needed. Seems there's not enough time in the day to get this all done

[Jake@JHM]

I figured you come out from your cubicle soon with that one...lol Actual Ive been so busy on other projects

http://forums.vwvortex.com/showthrea...-VW-Rabbit-GTI

http://forums.vwvortex.com/showthrea...laway-Re-Build

Im going to Drive Auto Works on Thursday to get the coding needed. Seems there's not enough time in the day to get this all done

Haha I just need a fault code read to get your ECU PN so i can upload you a file