[mike@x-ph.com]

Originally Posted by Lodi

What if we have an extended BMW factory warranty?

hmm not sure, might need to check with Dinan

[Lodi]

Originally Posted by mike@x-ph.com

hmm not sure, might need to check with Dinan

Originally Posted by cecaa850

After the base BMW warranty runs out, Dinan's warranty runs out as well. The best thing to do would be to call the company that administers your service contract and ask them. If they say they'll cover it, I'd write down the name of the person you talked to along with the date and time and put it in their records. I'd also ask to get it signed and in writing on their letterhead.

I'll get in touch with the dealership that did the original install and sold me the extended warranty and see what they say.

[Cristian135]

how many psi maximum can you blow without methanol?

[Mnoob2]

Originally Posted by Cristian135

how many psi maximum can you blow without methanol?

A lot of variables there.
In general, a custom tune with reliable octane you can probably sustain 16 to mid 17psi in the upper rpms. I would look for threads by SeanWRT. He has been doing some extensive testing.

[425M2]

Originally Posted by Mnoob2

A lot of variables there.
In general, a custom tune with reliable octane you can probably sustain 16 to mid 17psi in the upper rpms. I would look for threads by SeanWRT. He has been doing some extensive testing.

That's it?! Know what a stock turbo will run in the upper RPMs? 16-17 psi doesn't seem like much

[SeanWRT]

Originally Posted by 425M2

That's it?! Know what a stock turbo will run in the upper RPMs? 16-17 psi doesn't seem like much

Stock can flow 16~17psi up top no issue. The point is there is more heat than boost made there so engine is sucking hot and thin air and doesn't make much power.

Bigger compressor flow more at given shaft speed, so it takes less shaft speed (and thus less heat) to make any given boost. That's how you see more power more consistently. Also you can crank boost up to 19, 20psi or as high as you're happy with, Dinan would be still "less inefficient" than stock turbo any way.

As someone having been thru FBO stock flash, FBO Dinan Elite, BM3 STG2, Dinan turbo custom flash and G-Power turbo Custom flash, I'll say Dinan turbo rather holds up power than make more. You wouldn't see much peak gain, instead usable power (power under the curve) is significantly more, therefore it performs better in real world than on paper.

See below two of my posts. Hope they help.

https://f87.bimmerpost.com/forums/sh....php?t=1416389

https://f87.bimmerpost.com/forums/sh....php?t=1454381

[Cristian135]

Thanks seanwrt, how much power does dinan turbo generate in European cv measurement? I am from Spain and I see that you measure power differently. Thank you

[Cristian135]

414 whp in cv?

[SeanWRT]

Originally Posted by Cristian135

Thanks seanwrt, how much power does dinan turbo generate in European cv measurement? I am from Spain and I see that you measure power differently. Thank you

PS, CV or Din Metric power (European Standard) = 0.986 horsepower (US Standard). 414 wheel hp = 420 wheel PS/CV

You must remember how E92 M3 is advertised as 414 crank hp in North America but 420ps in the rest of the world.

[Cristian135]

then in europe a simple stage 1 are 410-420cv and a stage 2 450cv do not match the size of your then a turbo dinan in cv 470cv? little gain?

[Cristian135]

are my doubts before buying a turbo stage 1 to get the maximum petrol 98 thanks for your advice seanwrt

[SeanWRT]

Cristian135 Numbers can't be compared across USA and Europe, unless they're DYNOJET numbers, corrected to same standard (STD standard favored here) and same unit (hp, ps, cv). Even that, some Dynojet reads higher or lower than others.

I wouldn't even look at the numbers from other dynamometers without SAME DAY SAME MACHINE SAME TCF benchmark provided. Even the heart breaking mustang, known for reading low, can be manipulated into reading higher than dynojet.

I'm not saying dynojet is the most accurate dynamometer in the business, because it is not and it reads high. My point is Dynojet has far superior correction capability to environment - altitude, temperature and humidity, and is difficult to manipulate (the operator can't freely input ambient data and TCF), which makes it the only type of machine you can trust to some degree and compare numbers gotten on different locations and different days.

Many say USA numbers are inflated, yes I know it only too well. On my local shop's dynojet (the most advanced one, 200k USD worth), there has been only one M4 (among countless tested) showing 400+whp stock to STD correction. The shop owner doesn't speak English and is not at Bimmerpost, so when I told him Bimmerpost guys believe M4 is 420whp stock, he laughed at me out loud like me and guys here are idiots.

However, I notice European numbers are even more ridiculous these days...The flashed M2 makes 450+whp on stock turbo and pump gas like no big deal. And European guys seem to be less aggressive and don't challenge vendor as hard as USA guys do.

I have no dog in this Euro vs USA fight and I never argue on that. But I usually dig into the bottom of the things and see the truth for myself.

[Daleb]

European numbers will be at the flywheel, not the wheels. In the U.K., Germany etc oem M2/3/4s all make very close to the manufacture flywheel figure at the flywheel. It’s only in the US and dynojet world that these cars are underrated.

Either way it doesn’t really matter, they should all be taken with a pinch of salt.

[ZM2]

Originally Posted by SeanWRT

Stock can flow 16~17psi up top no issue. The point is there is more heat than boost made there so engine is sucking hot and thin air and doesn't make much power.

Bigger compressor flow more at given shaft speed, so it takes less shaft speed (and thus less heat) to make any given boost. That's how you see more power more consistently. Also you can crank boost up to 19, 20psi or as high as you're happy with, Dinan would be still "less inefficient" than stock turbo any way.

As someone having been thru FBO stock flash, FBO Dinan Elite, BM3 STG2, Dinan turbo custom flash and G-Power turbo Custom flash, I'll say Dinan turbo rather holds up power than make more. You wouldn't see much peak gain, instead usable power (power under the curve) is significantly more, therefore it performs better in real world than on paper.

See below two of my posts. Hope they help.

https://f87.bimmerpost.com/forums/sh....php?t=1416389

https://f87.bimmerpost.com/forums/sh....php?t=1454381

Echoing this point, what I noticed in real life on the track was I could get the jump on the C7’s coming out of the corner, reel them in some, and they’d start to pull back a little once we got over 125mph (better aero).

The Dinan turbo upgrade doesn’t feel like a huge power jump, but the extra power is accessible everywhere in the rev range and it made a big difference on track. And, it’s ultra smooth, which is very important for mid corner throttle control.

The only car that passed me all weekend was a ZR1 on slicks. Not much I could do against that.

[cecaa850]

Originally Posted by ZM2

The Dinan turbo upgrade doesn’t feel like a huge power jump, but the extra power is accessible everywhere in the rev range and it made a big difference on track. And, it’s ultra smooth, which is very important for mid corner throttle control.

That's the feedback I like to hear as I'm saving up for one. That's exactly what I'm looking for. My cat came in yesterday and I'll be slapping it on as soon as I get my break in service done.

[LFaist]

Originally Posted by cecaa850

That's the feedback I like to hear as I'm saving up for one. That's exactly what I'm looking for. My cat came in yesterday and I'll be slapping it on as soon as I get my break in service done.

Installed Dinan P2 turbo exhaust intake intercooler upgrade on my '18 LCI in May. As noted above, smooth and simply more power everywhere in the rev range. Well worth the coin spent. I don't track it but it is just pure fun to drive.

[cecaa850]

Originally Posted by LFaist

Installed Dinan P2 turbo exhaust intake intercooler upgrade on my '18 LCI in May. As noted above, smooth and simply more power everywhere in the rev range. Well worth the coin spent. I don't track it but it is just pure fun to drive.

I'm going to run mine with the Fabspeed cat and stock muffler to start with and see how It does. I'm also going with a drop in dry panel filter instead of an intake.

[swifty]

Not sure if it's been mentioned here but how much more weight does the Dinan kit add over the stock setup including intercooler.

[ZM2]

Originally Posted by swifty

Not sure if it's been mentioned here but how much more weight does the Dinan kit add over the stock setup including intercooler.

15lbs? Not sure.

[Lodi]

Just an FYI for the DINAN P2 people out there. I just installed an ER catless downpipe, have been driving the car all day, and so far no check engine light. I couldn't find any info on whether or not the dinantronics piggyback would suppress the o2 error light, so, at least for now, I am pleasantly surprised. I'll check back in if anything changes with more mileage.

[horsepower_and_hounds]

Originally Posted by Lodi

Just an FYI for the DINAN P2 people out there. I just installed an ER catless downpipe, have been driving the car all day, and so far no check engine light. I couldn't find any info on whether or not the dinantronics piggyback would suppress the o2 error light, so, at least for now, I am pleasantly surprised. I'll check back in if anything changes with more mileage.

It's not supposed to since the tune is CARB certified in Ca for road use. That is against the law..... And why Burger Tuning had to remove their feature on piggybacks. I got a feeling your getting lucky so far

[Lodi]

Originally Posted by m2ruder

It's not supposed to since the tune is CARB certified in Ca for road use. That is against the law..... And why Burger Tuning had to remove their feature on piggybacks. I got a feeling your getting lucky so far

Only time will tell I guess. I put about 150-200km on the car today though, no cel yet?!