Originally Posted by JCR-Porsche

You're not imagining those gains

The latest post DRAGY thread once again proves that our parts make power and work in real world scenarios..

Unfortunately this thread still gets brought up in conversation with me at least once a week. It's really a shame that one dud test result amongst the hundreds of positive reviews and experiences can cause so much damage to a company.

JC

Originally Posted by josephr25

With the JCR Superlight it is way easier to light up the rear tires... that's for sure

Originally Posted by JCR-Porsche

To our credibility, a little, as it called into question if what we state can be trusted and ultimately that is damaging when almost all of our business is based on trust and reputation.

That’s just the highs and lows of the internet, I guess. Hopefully everything we do helps to gain trust which is why I always encourage questions and share as much as possible

Having another 718 GT4 of our own gives us lots more opportunities to share how our parts can help transform this already incredibly capable package

Our build thread for the JCR GT4 v2.0 will be the place that we share all updates and results until the car is moved on

JC

Originally Posted by JCR-Porsche

To our credibility, a little, as it called into question if what we state can be trusted and ultimately that is damaging when almost all of our business is based on trust and reputation.

That’s just the highs and lows of the internet, I guess. Hopefully everything we do helps to gain trust which is why I always encourage questions and share as much as possible

Having another 718 GT4 of our own gives us lots more opportunities to share how our parts can help transform this already incredibly capable package

Our build thread for the JCR GT4 v2.0 will be the place that we share all updates and results until the car is moved on

JC

Originally Posted by 4lflat6

OP Here,

Just to remind you Jonny and rest of folks here (including JCR fan boys), I have ZERO financial gains in putting this out here. I PAID 7K for the exhaust, had it installed, did before/after dyno.. all out of pocket. Now it is very convenient for Jonny to call this the "lows of internet" but obviously unlike me, he has a financial stake in this. Jonny, if your brand is based on trust, you would 1/ AT LEAST offer to refund me and have me ship back the exhaust 2/ You would have followed through with your promise from 2 years ago and posted additional dyno info (but you conveniently didn't). As of today, the only dyno you have is of the spyder that was pumping out 350HP from factory which is severely underpowered compared to the rest of the dynos out there for the same platform.

I really welcome the idea of posting more data on this. So far the GT4 2.0 has been micky mouse stuff. Retrofitting a bunch of GT4RS stock parts to a GT4 (some with 3M tapes) is really not rocket science. You are appealing to the folks out here who couldnt get a GT4RS allocation and that's a good representation of your brand. Folks who want their GT4 look like a GT4RS and sound like a GT3. lol

Also on the 2.0 build, I see you have already fitted the whole system. I challenge you to uninstall the OAP and headers, just add the backbox, document the process and do before/after dyno and shut me up once in for all. I CHALLENGE you. But I already know I will hear some more cheap talking points than any meaningful data (and no Draggy is not a performance tool LOL)

Originally Posted by 4lflat6

OP Here,

Just to remind you Jonny and rest of folks here (including JCR fan boys), I have ZERO financial gains in putting this out here. I PAID 7K for the exhaust, had it installed, did before/after dyno.. all out of pocket. Now it is very convenient for Jonny to call this the "lows of internet" but obviously unlike me, he has a financial stake in this. Jonny, if your brand is based on trust, you would 1/ AT LEAST offer to refund me and have me ship back the exhaust 2/ You would have followed through with your promise from 2 years ago and posted additional dyno info (but you conveniently didn't). As of today, the only dyno you have is of the spyder that was pumping out 350HP from factory which is severely underpowered compared to the rest of the dynos out there for the same platform.

I really welcome the idea of posting more data on this. So far the GT4 2.0 has been micky mouse stuff. Retrofitting a bunch of GT4RS stock parts to a GT4 (some with 3M tapes) is really not rocket science. You are appealing to the folks out here who couldnt get a GT4RS allocation and that's a good representation of your brand. Folks who want their GT4 look like a GT4RS and sound like a GT3. lol

Also on the 2.0 build, I see you have already fitted the whole system. I challenge you to uninstall the OAP and headers, just add the backbox, document the process and do before/after dyno and shut me up once in for all. I CHALLENGE you. But I already know I will hear some more cheap talking points than any meaningful data (and no Draggy is not a performance tool LOL)

Originally Posted by DC021

Ali, Derek here.

I live and die by dynos for NASA / WRL Power-to-Weight classing and as such, I’ve spent a significant amount of time on DJs learning the in/outs of the logic in which they operate.

One glaring issue I see from your two Dyno days is that the operator choose to use Gear Ratio to calculate engine RPM. Using this process, the operator introduces a not insignificant amount of human variables into the mix that could skew results. Personally, I would call both plots void on this reason alone.

Secondly, I would ask if it is possible to get both plots in SAE correction factor so that it uses a more reliable method of correcting for the difference in atmospheric conditions.

Just my observations. Like you, I have no skin in this game.
Cheers
Derek

Originally Posted by UncleDude

that bolded stuff doesn’t help your credibility here…..

Originally Posted by JCR-Porsche

1. Logging AIT’s or at least being aware of them should be very simple in that case, is that something that was considered or measured?

2. Consistency (no side air intake fans) between the before & after tests doesn’t take away the issue mentioned above. It will definitely impact results because you’re introducing a factor which you will not encounter in the real world unless you almost entirely blocked the side vents.

3. Comparing a header back exhaust to a rear silencer replacement on a different car, 9 months ago really bares no relevance at all. No bashing here, just presenting factors that can lead to skewed results, I’m trying to help.

4. 100-200kph acceleration data is the test to use to compare before after but again these really need to be completed on the same piece of road (we use track) and with conditions as close as possible too. 0-60mph is way more to do with the launch than anything else.

5. If our rear silencer ‘loses’ power then we certainly wouldn’t be posting the times that we are, we’re actually quite a long way ahead and we have data from our race manifolds / OPF delete with stock rear and race manifolds / OPF delete with JCR rear and there is a very distinct gain in performance.

5.1. In regards to stock vs rear box only 100-200kph data this is something that I will be able to gather in the next few weeks with the next willing customer car we have in, no issues, I’ll share on this thread ASAP.

6. Again, I was trying to be polite, very happy that you’re successful and earning lots of money. I think you’re getting the wrong end of the stick with a number of responses on this thread. You have to be reasonably open to criticism when presenting this kind of information in this way.

JC

Originally Posted by rp2000r

To really compare results got to do runs same day I would think but thanks for sharing your info and results.