Questions for JHM about SC Kit

[Axel-]

What knocks off that much time for $1200, stock vs tune + DIY piggies + used cheap catback?

JHM Tune: $500
Trexturk 2.5" DPs: $500
Magnaflow 2.5" X-Pipe catback: $700

You can easily shave off 0.5 seconds with that (and possibly more).

[Omerta]

Define small gains. Shaving off 0.5 to 1 second in the 1/4 mile for $1200 isn't too shabby IMO but everyone has a different perspective.

I'm talking about just whp gains, not 1/4" times. That being said, if you're gaining that much - I'd bank on it being driver improvement over power gains making the difference.

JHM Tune: $500
Trexturk 2.5" DPs: $500
Magnaflow 2.5" X-Pipe catback: $700

You can easily shave off 0.5 seconds with that (and possibly more).

Thats $1700 with no tax, shipping or labor....

25 whp / 15 wtq for ~$3k of bolt on mods is not bad... but you really can't get anything beyond that unless you go for FI in which choices are very restricted thus far.

I've been playing with a few ideas of sizing a single large turbo, but I need to spend some more time dimensioning where to stick it. Let alone the tuning, plumbing, potential quenching, and unknown limits of the engines materials. The engine was built to be a high revving, efficient breather with lightweight internals and an aluminum block. It would be awesome if JHM could share some of their R&D on the engines limits because it feels like the risk might not be worth the payoff vs. tuning smaller more robust engines.

Has anyone looked into putting the RS4 DI system on in the S4 or is that just to much of a nightmare?

[Axel-]

I'm talking about just whp gains, not 1/4" times. That being said, if you're gaining that much - I'd bank on it being driver improvement over power gains making the difference.


Thats $1700 with no tax, shipping or labor....

Sorry, I was thinking something different in my head and mis-counted. Yes, $1700. As for whp gains, you'd be looking at 30-40whp. Still not too shabby.

25 whp / 15 wtq for ~$3k of bolt on mods is not bad... but you really can't get anything beyond that unless you go for FI in which choices are very restricted thus far.

Again, not sure where you're getting your numbers. 30-40whp for $1700 assuming you're a nice guy and people are willing to loan you a cable and charger for the tune. Up to $1800 if you have to go to an approved shop to do it for you. Where you're getting your $3000 figure and 25whp I have no idea.

I've been playing with a few ideas of sizing a single large turbo, but I need to spend some more time dimensioning where to stick it. Let alone the tuning, plumbing, potential quenching, and unknown limits of the engines materials. The engine was built to be a high revving, efficient breather with lightweight internals and an aluminum block. It would be awesome if JHM could share some of their R&D on the engines limits because it feels like the risk might not be worth the payoff vs. turning smaller more robust engines.

Again, how much do you think you'll be spending on getting a single large turbo on this car??? Less than $10k after all said and done? I'd love to see that. May be possible but you'd really have to seriously plan ahead and really know what you're doing.

As for JHM sharing R&D work, you do understand business right? I'd love for all those patent owning pharmaceutical companies to release their R&D work so that low cost companies can easily reproduce the drugs quickly. Why would any company want to freely provide R&D work that cost them tons of money to their competitors and lose any edge they might have?

Some people seem to want the world but not have to pay a dime for it.

[Omerta]

Again, not sure where you're getting your numbers. 30-40whp for $1700 assuming you're a nice guy and people are willing to loan you a cable and charger for the tune. Up to $1800 if you have to go to an approved shop to do it for you. Where you're getting your $3000 figure and 25whp I have no idea.

Remove Product(s) Qty. Total

Exhaust - Cat-back - JHM B7 S4 Stainless Steel 2.5" w X-Pipe by FI Exhaust - Cat-back - JHM B7 S4 Stainless Steel 2.5" w X-Pipe by FI
- Downpipe Connection Dual 2.5"
- Resonators Yes
$1,295.00

Exhaust - Downpipes - JHM B6/B7 S4 "piggies" Exhaust - Downpipes - JHM B6/B7 S4 "piggies"
- Core Yes
- Transmission Type Manual
$669.00

JHM Tuning for B6-B7 S4 w 4.2L V8 (40v) JHM Tuning for B6-B7 S4 w 4.2L V8 (40v)
- Body Type Sedan
- Country USA - Canada
- Octane 91
- Transmission Type Manual
- Year 2005.5
- _Flashing Method Flash at JHM or JHM Dealer - Pay Labor at time of service
$550.00

Sub-Total: $2,514.00 - $300 deposit + shipping + handling + duties and taxes

= ~$3k

Numbers came from the most recent JHM dyno thread.

Again, how much do you think you'll be spending on getting a single large turbo on this car??? Less than $10k after all said and done? I'd love to see that.

That is the plan if I were to execute.

As for JHM sharing R&D work, you do understand business right? I'd love for all those patent owning pharmaceutical companies to release their R&D work so that low cost companies can easily reproduce the drugs quickly. Why would any company want to freely provide R&D work that cost them tons of money to their competitors and lose any edge they might have?

Some people seem to want the world but not have to pay a dime for it.

You really need to work on your comprehension of phrasing.

[Axel-]

You really need to work on your comprehension of phrasing.

And you need to learn how to read better. I gave you a sub-2k option for a 30-40whp gain but you seem to be ignoring it. There are other choices than the FI exhaust system.

[Omerta]

And you need to learn how to read better. I gave you a sub-2k option for a 30-40whp gain but you seem to be ignoring it. There are other choices than the FI exhaust system.

There are lots of combinations available.. sure, if you brought it all used locally it would almost be $1200. The 30-40 whp is ambitious but, my original statement was referring to the cost of big gains (+100whp) which is what the topic of this derailed thread is originally about.

[Axel-]

There are lots of combinations available.. sure, if you brought it all used locally it would almost be $1200. The 30-40 whp is ambitious but, my original statement was referring to the cost of big gains (+100whp) which is what the topic of this derailed thread is originally about.

Hey man, I was only commenting on your own earlier comment of:

Maximizing HP/$ is the end goal, but it appears the BHF isn't cheap to even make small gains.

You're the one that brought up small gains and it not being cheap. I pointed out you can get 30-40whp (NOT an ambitious number) for NEW parts for less than $2k. If you don't want to listen to the facts, then I can't do much more.

I myself got a 20whp gain from 2.25" DPs (my first DP's were Billy Boats and I was told they were 2.5" but they weren't) and 2.5" X-Pipe and NO tune. Increase the DP diameter to 2.5" and throw in a JHM tune and 35whp is easy.