[jonwilli]

Originally Posted by Kubricks

Yes I got that.
I honestly don't mind if there is a proven N/A setup that can give an extra 40hp, I'd love to go that route too.

Anyway, I guess I have provided most of the information people wanted by now? Once I got time to do a 5~100mph pull video I will end the thread.

Is it possible to get an extra 40hp from the 130i N52 though? It is stock at 265bhp, 305bhp without serious internal changes seems optimistic I would have thought?

[Kubricks]

Originally Posted by jonwilli

Is it possible to get an extra 40hp from the 130i N52 though? It is stock at 265bhp, 305bhp without serious internal changes seems optimistic I would have thought?

I am pretty clueless when it comes to engine modification to be honest.
I am "roughly" 4Xhp plus right now with the S/C, quite what will happen to the engine's internal I do not know, will have to fix it when the time comes I guess.

As for N/A, I search the internet and thought the gain (from N52B30 3-stage 265ps) is typically about 15~20hp max?

[CobraMarty]

PI or equivalent- +2hp
PE or equivalent- +5hp
headers- +15hp, Secondary cat delete +5hp
3 Stage IM- +10hp
Tune- +7hp

All Total- +40hp.

[hassmaschine]

you can't just add up HP figures like that.

Besides, the 130i already has a 3 stage.

[CobraMarty]

They are estimates and don't actually add up to 40, they add up to 44.
N52 estimates for 3IM.

But I get what you are saying, not all additive, but somewhat.

[hassmaschine]

I guess if you started out as a 328i/325i, ~40hp from all that is feasible (basically 200whp or less to ~240whp). If it's an automatic, it will be less of course...

but if you already have an x30i, it's going to to be tougher since the engine starts out with a better tune to begin with.

[Kubricks]

Originally Posted by CobraMarty

PE or equivalent- +5hp

Really?
I have that P-exhaust backbox right from the start, I did not mention it at all because I believe it does absolutely nothing. I can't feel the difference anyway apart from ... hm.... a deeper sound?

[CobraMarty]

+5hp if even that.

[rick100]

Originally Posted by Kubricks

Really?
I have that P-exhaust backbox right from the start, I did not mention it at all because I believe it does absolutely nothing. I can't feel the difference anyway apart from ... hm.... a deeper sound?

you are not going to feel 5 hp increase, even 10 hp increase would be hard to really notice.

I've read 335 guys with stage 1 complaining that they did not feel much difference from stock, and these guys are gaining 40-50 hp

[jonwilli]

Originally Posted by CobraMarty

PI or equivalent- +2hp
PE or equivalent- +5hp
headers- +15hp, Secondary cat delete +5hp
3 Stage IM- +10hp
Tune- +7hp

All Total- +40hp.

130i doesn't have the secondary cats and already has 3 stage IM. I'd have thought NA you could maybe get 30hp?

[JuniorB]

Don't forget the eBay chip that adds 60hp..

[Kubricks]

Originally Posted by JuniorB

Don't forget the eBay chip that adds 60hp..

I got a sticker from Nurburgring paddock shop too, that must adds 20hp at least right?

[Kubricks]

A little unhappy with ess tuning map in particular the torque output, I decided to go for a custom remap based on the same alpha-n arrangement.

My tuner is able to extract 30 extra hp from the pure ess setup, resulting in a 300 wheel hp figure.

My tuner said the setup should be good for another 20hp if I go for Meth injection during high boost, but I am not interested at the moment. Current figure has already exceeded my expectation.

[gunnerxq]

What pulley do you have? And stock injectors?

[W37V]

Originally Posted by Kubricks

A little unhappy with ess tuning in particular the torque output, I decided to go for a custom remap based on the same alpha-n arrangement.

My tuner is able to extract 30 extra hp from the pure ess setup, resulting in a 300 wheel hp figure.

My tuner said the setup should be good for another 20hp if I go for Meth injection during high boost, but I am not interested at the moment. Current figure has already exceeded my expectation.

That's more like it.

[Kubricks]

Originally Posted by gunnerxq

What pulley do you have? And stock injectors?

Original pulley from ESS, 120mm.
(NOT the high boost 115mm pulley)

Injectors are BOSCH E92 M3 spec.

[tlow98]

What are the before and after torque numbers?

[Kubricks]

quote from the other thread.

Originally Posted by Kubricks

FYR

Dyno with ESS tuning file;
258.4whp / 27.2 kgm tq


Custom tune (final spec, reduced peak hp for reliability);
295.7whp / 28.7kgm tq


The scale is a bit different but the change is obvious.

[bimmerquick43321]

very nice numbers this is how it should have come from ess.

[JuniorB]

Those are a lot better numbers, so when you say stock, I'll asume it's with the 3si, has anyone mentioned anything about running say a single or n54 intake with this? Is this with the use of e85?

[Kubricks]

I think I have to give credit to where credit is due here. I undersatnd ESS is not particularly helpful in some cases, and that they are not able to make the AA header works with the SC for some reason; but the hardware they produced is certainly top notch, the orginal Alpha-N map they provided is very stable to my EU version N52B30, it's just not making as much power as it can.

My tuner may have extracted an extra 37hp and produced a better torque curve profile, but the setting on low rev (0~3000rpm) was untouched simply because it runs very stable.

Originally Posted by JuniorB

Those are a lot better numbers, so when you say stock, I'll asume it's with the 3si, has anyone mentioned anything about running say a single or n54 intake with this? Is this with the use of e85?

The engine on E87 130i comes with 3-stage intake and no secondary cat from factory. I also have a PE-exhaust but I am not sure it does anything. All else is stock including the header and the cat within.

Can't comment on things I do not know of, better wait for someone more qualify to do so.

[JuniorB]

It just goes to show that there was meat on the bone, ess may of maxed this engine out and backed off as some sc tuners do. It still would have been better if there was stages that could be offered with this. We all knew a sc of this caliber was well capable of making great power, they all do, it was only a matter of time a tuner would take it there. Those are the numbers we should be seeing. Credit to both