Perrin STG1 tune

[Foobar]

Originally Posted by 2forme

Try asking him? I agree, let's not derail the thread. I just didn't want misinformation going out. I know he's got different calibrations for each intake.

I will, as soon as he's done sending tunes out.

I will also ask Perrin the same question.

[gmookher]

IIRC Perrin didnt see much power being made by their intake, or any other intake, and for $300 bucks, if it doesnt make power they dont sell it just to make a little extra noise, which is mostly what I see out there that folks are buying and then trying to convince them selves it can be tuned to make more power. I saw johns graphs, it was 2-3whp at best, in some cases 4-5hp at the top; and with each 3rd party intake, it looked like there was suffering down low.

I suspect most of the intakes that claim power dont really flow any better than OE untill youre at redline, and that is with compromises down low. Most folks are trading off midrange for 2-3hp top end with most any intake ... I am not ready to give any midrange up, and it seems niether is Jeff.

All the parts he has sold me have near eliminated the TQ dip. I dont even remember it.

he holds the bar very high for himself, and we all benefit. Trust that he is turning down tune money folks are throwing at Visconti for a good reason, he is making it a masterpiece, when its ready it will be for sale, and when its for sale, it will be worth buying. I am SO lucky to be a beta tester he throws stuff at, and so pleased to see the limits being pushed.

Its not all peak HP that youre buying when you buy Perrin. Some of it is plain drivability the graphs dont show that so easily. Thats why folks are SO happy with the tune he has developed. Sure you can take your 3rd party box and have Jeff tune for it; chances are he has already looked into it, and didnt make enough power to justify bolting said 3rd party box on. Whatever its your money. if youre hellbent on adding bog then trying to tune it out, whatever floats the boats.

Nothing gets put on Jeffs car if it doesnt make power, it wont sell. if it bogs, its not for sale.If enough people want a Perrin tune and have already bought a 3rd party box that causes a condition that needs fixin, I bet Jeff will tune for it just like Visconti. Dopesnt hurt to ask him. Once teh tune is for sale, I suspect that can all happen

Most likely, he is tuning for the drop in filter he sells, as it makes every bit as much power, and sound as any of the more expensive 3rd party air boxes. They could have sold us an intake just to sell us one, but it is their truthfulness to our community that makes them a vendor worth my money. I dig my drop in, and it give me a few extra hp with NO compromise in the middle of my curve.

Now, back to the logs I owe him on the last two tunes he sent me. I sense he is getting close to a final release.

[xxscaxx]

Originally Posted by 2forme

This is only kinda true.

Visconti has tunes adjusted for different intakes. I know he's got one for Injen, AIRAID, and aFe. They each require different tuning because of the way the MAF sensor reads and amount of flow they allow. This is important because a "cookie cutter" tune *COULD* end up running lean when swapping from stock to, say, Injen (since they bypass some air past the sensor to lean it out).

Which begs the question. Is Perrin going to prepare tunes for each intake?

I forgot about the intakes. But when I was talking to Jeff he asked me what my setup was and if I had an aftermarket intake or exhaust.

[JoeBoxer]

Perrin did show me a prototype intake tube going from the stock box to the throttle body, i think that tube plus filter, tune, and exhaust is where its at for NA mods.

[2forme]

Originally Posted by gmookher

I saw johns graphs, it was 2-3whp at best, in some cases 4-5hp at the top; and with each 3rd party intake, it looked like there was suffering down low.

Guess you didn't see my dynos.

I agree, intakes don't make much peak wise, but I didn't see any suffering down low on the aFe (considerable gains actually). I don't think the motor can utilize the flow advantage until power levels above 185whp.

Originally Posted by xxscaxx

I forgot about the intakes. But when I was talking to Jeff he asked me what my setup was and if I had an aftermarket intake or exhaust.

Right, but different intakes require different calibrations because of where they put the MAFS. Take the Injen for example, it leans out the mixture quite a bit. If you had a tune for stock intake or AIRAID intake, then installed the Injen, you could run much leaner than you really want for reliability.

I'm sure Perrin is well aware of this concern and will take the necessary precautions

[JoeBoxer]

I am curious as to why Perrin isn't using the wonder drug known as E85?

[xxscaxx]

Originally Posted by 2forme

Right, but different intakes require different calibrations because of where they put the MAFS. Take the Injen for example, it leans out the mixture quite a bit. If you had a tune for stock intake or AIRAID intake, then installed the Injen, you could run much leaner than you really want for reliability.

I'm sure Perrin is well aware of this concern and will take the necessary precautions

I'm aware of that Was just saying that he DID ask me if I was running an aftermarket intake. But i'm not, so I don't know how much more specific it would have gotten if I did lol.

I will ask Jeff/Chris if you would like so we can stop speculating.

[gmookher]

Originally Posted by 2forme

Guess you didn't see my dynos.

I agree, intakes don't make much peak wise, but I didn't see any suffering down low on the aFe (considerable gains actually). I don't think the motor can utilize the flow advantage until power levels above 185whp.



Right, but different intakes require different calibrations because of where they put the MAFS. Take the Injen for example, it leans out the mixture quite a bit. If you had a tune for stock intake or AIRAID intake, then installed the Injen, you could run much leaner than you really want for reliability.

I'm sure Perrin is well aware of this concern and will take the necessary precautions

agreed the afe/hks is the only one whose graph had any promise..

[xwd]

Originally Posted by JoeBoxer

I am curious as to why Perrin isn't using the wonder drug known as E85?

E85 tunes require running the engine at parameters that would not be safe on say 91/93 octane and E85 is notoriously inconsistent from gas station to gas station. So I don't think Perrin wants to go down that road with a tune they are mailing you. I wouldn't be completely comfortable running an E85 tune unless it was custom tuned on a dyno or with a lot of road tuning. I'm sure if you are local to Perrin they would be willing to tune your car on E85.

I am also awaiting the tune from Perrin since I have their catback but honestly I would rather a local tuner near me, either Forged Motorsports or maybe TopSpeed, to be able to do an Ecutek tune on a dyno. The Cobb off the shelf maps for the WRX/STi have gotten pretty good after many years, but they are never as good as getting a car custom tuned.

[ultra]

Curious to see official dynos, and I'd love to know pricing and/or release dates.

Guessing they're aiming to launch for SEMA?

[ahausheer]

Originally Posted by JoeBoxer

I am curious as to why Perrin isn't using the wonder drug known as E85?

Because its almost impossible to find. Its a good marketing gimmick but few will actually use it. It probably doesn't make sense financially for them.

[xjohnx]

Originally Posted by ultra

Curious to see official dynos, and I'd love to know pricing and/or release dates.

Guessing they're aiming to launch for SEMA?

When I asked they stated that each car would require its own unique tune.

[GenkiElite]

I hate Papa Johns too. Most over rated pizza ever.

[TemeCal]

Perrin has updated their blog, with ECUTek installation instructions.