Do the performance gains from hardware alone stay without a warrantee voiding tune ?

The gains seen here in this IPD Y manifold alone are impressive in the midrange vs a GIAC or piggy back tune that would surely void your warrantee. Now add to that a freer flowing turbo back exhaust system it should make some nice improvements in the all important midrange response of the Turbo S without a tune or will the stock ECU make these gains irrelevant with its auto corrections ?

I'd like to hear from the tuners that have actually done the R&D with before and after hub dyno testing to verify the need for a custom tune....

Same dyno, same car, same ambient conditions after a few engine cycles proof would be nice...

IPD Y manifold alone vs GIAC tune.....

 

Please don't feed the troll.

- Patrick

 

+1.. Where is the block button for this guy

 

Dude this is the response I expected from the ignorant fools that follow like sheep to a sales pitch.
If you don't know the answer please troll another thread. The troll is you..


You guys have already bought your tunes so sit back and maybe learn how it actually works..

I'd like to know exactly how the DEM reacts to bolt on parts and if anyone really knows to what extent corrections are made....and I'm sure there are others that would like to know also...

Here is the IPD plemum

 

So will the IPD Y manifold performance gains remain without a tune and can someone post dyno sheets showing the return to stock if it does...

Tuner only answers please...

 

I'd only like to clarify that the second dyno sheet you posted is from a car that does have the GIAC software installed along with an aftermarket exhaust system.

We have only tested the IPD plenum with the software installed, not on a completely stock car.

To answer your question...there is no reason to believe that the ECU would "auto-correct" (as you say) for any hardware upgrade, unless that part caused the ECU to operate outside of it's pre-set parameters. Simple bolt-ons like exhaust, IPD plenum, intercoolers, etc...will not cause that to happen. Let's say you slapped on a set of GT35 turbos without an ECU tune...then yes, the ECU will step in and start "auto-correcting".

 

According to the guys that installed mine, that isn't possible. Increased airflow produces greater power due to greater fuel injection from the ECU. The ECU has no way to limit the airflow and hence, it must increase fuel in order to maintain the proper mixture. I don't see how anyone could argue otherwise.

 

Thanks guys, it's these comments that made me wonder.....and is why I ask if there are before and after dunno sheets to support these statements of fact from Austin@GIAC..

Austin@GIAC
Premium Sponsor
If you're looking to gain power from one, yes. Stock software will adapt any power gained from the hardware upgrade over a short period of time. It will show a gain immediately after installing it, though.

If you're just installing it for sound, it shouldn't bother you.

And...
The DMEs can calculate a myriad of "power" outputs and have calculated torque targets set in place by the DME. Let's say for instance a stock Turbo S outputs a maximum torque value of 650nm on a data log. Then by installing a free flowing exhaust system reported torque rises to 675nm The DME will correct out timing, or even close the throttle in an effort to return to the specified 650nm. In my experiences, I have not seen any variations in AFR, unless the modification causes the vehicle to go into a fuel dump sort of limp mode.

 

IMO if you install an IPD plenum and Y pipe the DME will not close the throttle to reduce he air quantity but will adapt the fuel quantity...

 

It has to correct for the proper A/F ratio but GIAC is saying that it will close the throttle.....:roll eyes:

It doesn't matter to me now since these guy are as vague as can be and the car is fast enough with just a free flowing exhaust on it for me....

The best way to save money for tires is to not buy into the hype and warrantee voiding mods..

 

RS, just a sharing my opinion. I feel or at least hope you have good intentions in all of your threads. Pretty aggressive stuff. You are new here and calling out some long time solid vendors. Perhaps a different approach will get you the answers you are looking for. If that is really what you need. I will put myself out there for you and offer assistance if you would like to call anytime. I offer and have experience with pretty much all tunes and hard-ware. For starters you have a great exhaust system and I have sold several of the BBI's. They are awesome and happened fit my customers needs/budgets. Enjoy it. It doesn't mean everyone else is doing it wrong my friend. I also think that you will find the owners of these cars are professionals. Guys who for the most part do not have the time nor desire to test each and every product on the dyno before and after. I think we all agree it's fun and informative but takes serious dedication and time. Not as common as guys who want to just have it done. So the next best thing is to lean on proven and shared information that the vendors put out. Or speaking to a few of us with open eyes before jumping to conclusions. You may find that your intentions if genuine are taken care of. Do we need any of this stuff? HECK NO LOL! We are car guys and there are several flavors out there and several different appetites. I for one guarantee everything that leaves my doors. I have been a sponsor since this forum began and my reputation is there. I can say even MORE for Tom and GIAC and several others. We built it, so we lean on it. Like any brand does. It should say something that GIAC is a tuning firm with engineers on staff that have one sole purpose. That they were and quite often to first to get into these ECU's. Sometimes the only. Oh yes there are some products that are not top notch. Your searches and the right questions to the right people will steer you clear of those. If you do not trust the information, test it for yourself. Only then can you say who is wrong or roll eyes in my opinion in this community you have recently joined. I am up to the challenge of helping you solidify your facts and guarantee certain published claims with those solid companies I stand behind. In fairness I am not the only one either. Lines are open!

Cheers

 

I've reached my decision and a better than every other exhaust system I've seen is on my car....as for any other engine mods I'll pass since I can't use all the power the car makes as it is...
I did see the boost gauge hold 17 psi. a few times on corner exit but I run out of road quickly in the canyons....

 

That's great! Enjoy. If you have some questions or even allegations please ask don't assume. You will make more friends!

 

No allegations just a statement of fact, how about setting up a local awd dyno afternoon with other exhaust only modified 991 Turbo S cars and see for yourself.
I'm in Sherman Oaks, Ca.

Engineering for performance..

 

Right, that is where the measured performance gains come from and according to the tech that installed mine, the ECU doesn't back them out, it just provides more fuel. Gas mileage is reduced but performance is increased. Arguments to the contrary have been specious at best.