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Ecu Tuned For Specific Turbo Size?


jdlc

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Joseph, would you mind taking that a step further and tell us what kind of gains will be seen by switching from the stock DP to a 3" with the stock ECU and a 16T or 15G? :D

Typically you'll gain a couple of PSI and it feels stronger across the whole powerband, especially towards redline it feels way stronger. All those rumors about increased lag, are exactly that... rumors. You don't have any increased lag, it just feels so much stronger up top that allot of people get confused and think it's lag.

My catless 3" 19T setup spools just as fast as a stock car with a 15G/stock downpipe.

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Typically you'll gain a couple of PSI and it feels stronger across the whole powerband, especially towards redline it feels way stronger. All those rumors about increased lag, are exactly that... rumors. You don't have any increased lag, it just feels so much stronger up top that allot of people get confused and think it's lag.

My catless 3" 19T setup spools just as fast as a stock car with a 15G/stock downpipe.

yeah, i had already rejected the rumors of increased lag, because it doesn't make sense. reduce restriction behind the turbine and all the sudden spool time increases? try again :lol: if anything, it should start spooling earlier, and as you implied with the 19T, quite a bit faster

that's about the response i was expecting though. thanks :)

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haha, nothing like having a setup that @ 20psi can not even spin the tires to having a setup that just roasts them to hell @ 5-10psi

that car was so stupid

Ah, but probably better than spinning them in vacuum :lol::lol::lol: Yay for fwd, open diff, H rated hawtness.

And for the record, a 2.5" downpipe on a 70 trim T4 should still flow enough air to get those tires spinning :P

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Typically you'll gain a couple of PSI and it feels stronger across the whole powerband, especially towards redline it feels way stronger. All those rumors about increased lag, are exactly that... rumors. You don't have any increased lag, it just feels so much stronger up top that allot of people get confused and think it's lag.

My catless 3" 19T setup spools just as fast as a stock car with a 15G/stock downpipe.

Curious, what is the inside diameter of stock downpipe? Are they the same across different models (R, T5) for P1 cars?

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Ah, but probably better than spinning them in vacuum :lol::lol::lol: Yay for fwd, open diff, H rated hawtness.

And for the record, a 2.5" downpipe on a 70 trim T4 should still flow enough air to get those tires spinning :P

it should but it did not(as the turbo spooled really really late so very little power till near the end of the gear and even then not a lot), as soon as the exhaust went on all of a sudden magic huge increase in power so no idea

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My car FELT slower once I had a 3" catback and DP w/race cat installed but was quicker when racing my wife's T5.

As I discovered at the dyno though, the car now runs pig rich at WOT ;)

But as joseph said, I get around 12~13 psi now when I was getting 10.

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