ChicagoEvo9

iTrader: (3)

I've done some research and what I've come up with is speed density is only beneficial when going with a bigger turbo than stock because at that point MAF becomes a restriction..

Would like some insight on this as I am not too familiar with SD at this point

If speed density would be beneficial to me, I will definitely throw it on my setup so all opinions are appreciated!

Thanks

alleggerita

I have a much milder set-up and I am sold on SD. Absolutely love the car. Power up slightly, drivability once warm way better.

Also see this link:

https://www.evolutionm.net/forums/ev...ock-turbo.html

ChicagoEvo9

iTrader: (3)

It's a good read thanks! I guess if I'm not having any issues with my maf then idk if I should switch over.. Other than the 10 hp gain

alleggerita

The big thing for me was part throttle drivability - that is really THE reason to do it. It makes the car much more enjoyable and easier to place and drive quickly on back roads.

ChicagoEvo9

iTrader: (3)

Stock turbo?

alleggerita

bone stock

chu

iTrader: (72)

This. The biggest advantage is partial throttle driveability. It's a noticeable difference, especially since I track my car. No more bucking under partial throttle.

joseph143

iTrader: (8)

According to some thners the stock maf is good to 700+... I switched sd because of part throttle bucking... When getting tuned by a GOOD tuner you dont even need the iat sensor... Which makes it 100 plus tune for a better driving car. Plus if youhappen to blow off you piping you can still drive to a decent place to fix your car rather then getting stuck in traffic or the highway... Both of which have happen to me. After sd i blew off a pipe and drove for 30 miles to the house with no issues so i could fix my car in peace.

ChicagoEvo9

iTrader: (3)

My tuner recommends MAF ):

PureDrivePerformance

In that case I think you should do a MAF tune. Some tuners aren't comfortable doing it yet or feel it's not a big enough gain to switch. Like Aaron at ER said on a stock turbo it's 10 HP at best.

What kind of racing do you do?

romogst

iTrader: (14)

Just get the SD, you are modifying your car anyways, i'm sure down the road you'll have a bigger turbo.

ChicagoEvo9

iTrader: (3)

Street

JohnBradley

iTrader: (30)

8-10whp is average. But if you are looking for that last 8-10whp its worth doing of course. As was said earlier though, if your tuner isnt comfortable doing it then its decision time. Either get a new tuner which is extreme or heed his advice and then just tune the car on a MAF.

Aaron