[Bimmer28312]

As I've noted in a few threads I was debating between BM3/pure and Dinans stg4 large turbo upgrade. In the end I went the Dinan route as I believed the power increase and overall performance was going to leave me satisfied. Prior to install I was running jb4 with 2 gallons of e85 which per my butt dyno gave me a nice bump in power.
Currently my 6spd mt M2 has a catless DP, Dinan exhaust, Dinan intercooler, dinantronics and of course the large turbo. Before I give my opinion I want to first say these are my own personal results and in no way trying bash either company.

After the install was complete I was pretty eager to let it rip on the hwy. When I first turned it on it sounded great. Strong idle, no surge, and at moderate revs I can hear the turbo sing a bit. Was truly excited at this point and for $6 I was expecting a very notable difference. One thing I want to note is I kept my jb4 on to clear my cel and for logging purposes only. So jb4 was kept on map 4 only. As I began driving I found no issues at all and mid rev transitions into gears were all fine.
Finally managed to get onto the hwy after I filled her up with 94 octane I was sure ready to give it a go. I did a few 3rd, 4th, and 5th gear pulls when I began to notice the changes.
Per Dinan the upgrade should of yielded 101hp and 86lbs of torque from stock at 4500rpm.
30min later into my drive it was obvious to me the power jump was not much of an increase per my butt dyno. DYNO?? Not yet as it's been raining quite frequently lately but plan on it very soon.
I was sure of myself that perhaps it wasn't set on stg4. Called Dinan up and they made sure my software was upgraded and double checked I was on stg 4per Dinan app. I had a few more chances where I had compete open roads to test the power band. Is there a difference? Sure, I can feel a bit more pull mid range and it becomes apparent in the higher gears. But to say it's night and day well again this is my opinions and I say no there isn't.
So, what will I do? I've decided to take it into Dinan and have them take a real good look at it all and run it on thier dyno to confirm numbers.
Otherwise guys, stay tuned as I will give more feedback as I may have an issue which can correct the power or lack thereof.

[BruceM]

I'm all over this one. I have a Stage 4 kit ready to install. When will you be able to leave it with Dinan?

You should feel the difference Dinan has published, with no "maybe" or "kind of" involved.

[Bimmer28312]

Originally Posted by BruceM

I'm all over this one. I have a Stage 4 kit ready to install. When will you be able to leave it with Dinan?

You should feel the difference Dinan has published, with no "maybe" or "kind of" involved.

I'm hoping I can find time this week. Maybe wed or Thur.

[NOLAGUY]

What made you go with Dinan? I'm sure a lot of people are in the same dilemma.....Dinan vs Pure

[Bimmer28312]

I went with Dinan for a handful of reason.
Went with Dinan because of the simplicity of there set up plain and simple. Keeping my warranty sure that's a plus but not to concerned about that. Also, because I was already using or planned on using many of their products which again goes with simplicity.

[DroneandDone]

any updates? i've been reading up on the dinan packages and i came across your posts. i appreciate the way you've been honest and seemingly impartial about your results. i'm still interested in getting the dinan exhaust and res delete but if the power gains are not that dramatic i won't be able to justify the cost.

[auf Deutsch]

Originally Posted by DroneandDone

any updates? i've been reading up on the dinan packages and i came across your posts. i appreciate the way you've been honest and seemingly impartial about your results. i'm still interested in getting the dinan exhaust and res delete but if the power gains are not that dramatic i won't be able to justify the cost.

~50 whp over stock midrange, ~75 whp over stock upper range with stage 4

[DroneandDone]

thanks for the quick reply!

now i just have to figure out how much of a difference the sport cat made since i'm too chicken to mess with the warranty

[auf Deutsch]

Originally Posted by DroneandDone

thanks for the quick reply!

now i just have to figure out how much of a difference the sport cat made since i'm too chicken to mess with the warranty

I'm the biggest warranty pussy here but had no reservations on Fabspeed's sport cat DP. The high-flow HJS cat they use is top notch and may even prolong the turbo's liftespan given its ability to flow/spool much better. My service advisor is well aware of it and thinks it's awesome.

[SeanWRT]

Originally Posted by DroneandDone

thanks for the quick reply!

now i just have to figure out how much of a difference the sport cat made since i'm too chicken to mess with the warranty

Do yourself a favor install a HJS core high flow dp. It will net you a noticeably stronger low~mid range and 10~15rwhp or so in peak and glorious exhaust notes. Little to none smell to deal with and you can always easily change back to stock dp in case of warranty claim.

I switched to flash tune and am selling my Dinantronic. Should save you a lot taking Dinan route, PM me if you're interested.

[mike@x-ph.com]

Originally Posted by DroneandDone

thanks for the quick reply!

now i just have to figure out how much of a difference the sport cat made since i'm too chicken to mess with the warranty

Wagner and Fabspeed are our most popular catted options. Both in stock

[Bimmer28312]

Originally Posted by SeanWRT

Do yourself a favor install a HJS core high flow dp. It will net you a noticeably stronger low~mid range and 10~15rwhp or so in peak and glorious exhaust notes. Little to none smell to deal with and you can always easily change back to stock dp in case of warranty claim.

I switched to flash tune and am selling my Dinantronic. Should save you a lot taking Dinan route, PM me if you're interested.

I've been on the fence about ditching the dinatronics and going with full flash bm3.
How much of a difference was it switching to full flash?

[SeanWRT]

Originally Posted by Bimmer28312

I've been on the fence about ditching the dinatronics and going with full flash bm3.
How much of a difference was it switching to full flash?

I'm on stock turbo yet so I can't really comment Dinantronic Stage 4 vs. BM3 flash.

My suggestion for you is to log Dinan stg4 using JB4 map4. If memory serves, stg4 is targeting 6~6.5 maximum boost over stock, which should get you 20~21psi. Very aggressive if you ask me.

Your previous setup FBO E30 JB4, is already a beast, I'm not surprised you don't feel much of a difference running P2 on pump gas.

[LBBDrew]

SeanWRT Bimmer28312 let me know if you guys are selling your dinantronics sport tuners

[Fabspeed Motorsport]

Originally Posted by auf Deutsch

I'm the biggest warranty pussy here but had no reservations on Fabspeed's sport cat DP. The high-flow HJS cat they use is top notch and may even prolong the turbo's liftespan given its ability to flow/spool much better. My service advisor is well aware of it and thinks it's awesome.

Thanks for the shout out! You hit the nail on the head. There are too many reviews on this thread to discredit our Sport Cat Downpipe. It's just that damn good!

[ZM2]

Originally Posted by Fabspeed Motorsport

Thanks for the shout out! You hit the nail on the head. There are too many reviews on this thread to discredit our Sport Cat Downpipe. It's just that damn good!

No CELs? Will this pass emissions in Montgomery County, MD?

[Fabspeed Motorsport]

Originally Posted by ZM2

No CELs? Will this pass emissions in Montgomery County, MD?

No CELs and you shouldn't have any issues with emissions!