technical F30 335i missing under load

[Teezoh]

Well you do have meth injection from the looks of it. That on its own acts as an intercooler upgrade. Running tunes without an intercooler upgrade does lead to more knock/pre-detonation if not mistaken. A bad batch of fuel and high temps can be a recipe for disaster even if our cars can pull back power.

I felt more comfortable having as much cooling as possible. I am not a big fan of meth injection as its another failure point I dont want to deal with so got he biggest intercooler I could find. When I decide to go for more power, I will do DI only. DS25 HPFP and N63 EU5 injectors. Will only do meth injection if my builder/tuner says it is a must for extra cooling.

Yes, as stated, I do run meth, but I also ran Stage 2 just fine without it.

Meth is by no means a replacement for an intercooler and does not act as an upgrade for one either. Intercoolers continuously reduce intake temps as long as the engine is running, while meth, only when running water mixes, cools ONLY when spraying. You only spray when hitting certain boost targets. That's why I said you NEED to understand your car. It's also important to note that I pointed out letting the car breath after every hard pull. Combining all that math into one recipe is the outcome of my comment. In short, the stock cooler is perfectly fine and can handle Stage 2 if you understand your car and don't drive like a tard, trialed and tested.

Regarding the failure point, the systems have their own checks in place before even activating, happens in a few seconds and continuously checks too.

I did not fit meth because I want more power, that is simply delusional. I decided to go with it, knowing where I want my car and what fits my needs. If I wanted the "bestest and fastest mudder fukka" on the road as an endgame achievement, I would have bought the M140i parked next to mine on the day of my purchase, rather than building on the N55 platform.

 

[Pisancho]

Yes, as stated, I do run meth, but I also ran Stage 2 just fine without it.

Meth is by no means a replacement for an intercooler and does not act as an upgrade for one either. Intercoolers continuously reduce intake temps as long as the engine is running, while meth, only when running water mixes, cools ONLY when spraying. You only spray when hitting certain boost targets. That's why I said you NEED to understand your car. It's also important to note that I pointed out letting the car breath after every hard pull. Combining all that math into one recipe is the outcome of my comment. In short, the stock cooler is perfectly fine and can handle Stage 2 if you understand your car and don't drive like a tard, trialed and tested.

Regarding the failure point, the systems have their own checks in place before even activating, happens in a few seconds and continuously checks too.

I did not fit meth because I want more power, that is simply delusional. I decided to go with it, knowing where I want my car and what fits my needs. If I wanted the "bestest and fastest mudder fukka" on the road as an endgame achievement, I would have bought the M140i parked next to mine on the day of my purchase, rather than building on the N55 platform.

Well, if you aren't sitting above a certain boost threshold, then technically, a stock intercooler is just fine. That is things like being in traffic or cruising on the highway. When you are above your boost threshold, it technically does act as an intercooler upgrade, as it keeps your temps down, which boosting leads to higher temps. So that argument doesn't really apply.

And yeah, I agree, I was stage 2 for 6 months, I think on the stock cooler. But the car sucked on breakfast runs with mates in M cars. One or 2 pulls, and my car would feel sluggish after, and with okes moving quickly from robot to robot, there is little you can do in the way of letting it cool down.

Well, an M140i is about 200 to 300k more than a N55 counterpart. If you already have a N55 car, it's a waste of money in my opinion to buy a B58 unless you want to make over 700hp, which 99% dont do. Most say closed deck this and that, but never run the power required to actually take advantage of it. A simple fuel pump upgrade and a stage 3 hybrid turbo is already hitting 340kW on 95 fuel on an N55. You can do that with 200k to spare vs buying a M140i that is clean.

The cost of modding N55s has come down quite a bit with the R&D done over the years (Pure turbos, Big boost, BYM turbo kits, etc.). So, unless you already own a B58 car, I would stay with an N55. I, for example, would not drop 1M on a used 840i to get the B58 when I have a N55 640i I already own, I can drop a 20th of the money on a turbo to hit the 500hp figures, which is more than enough in my opinion.

If you don't have a car, then get the B58.

 

[Teezoh]

Well if you arent sitting abovea certain boost threshold then technically stock intercooler is just fine. That is things like being in traffic or cruising on the highway. When you are above your boost threshold it technically does act as an intercooler upgrade as it keeps your temps down which boosting leads to higher temps. So that argument doesnt really apply.

And yeah I agree, I was stage 2 for 6 months I think on the stock cooler. But the car sucked on breakfast runs with mates in M cars. One or 2 pulls and my car would feel sluggish after and with okes moving quick from robot to robot there is little you can do in the way of letting it cool down.

Well a M140i is about 200 to 300k more than a N55 counterpart. If you already have a N55 car, its a waste of money in my opinion to buy a B58 unless you want to make over 700hp which 99% dont do. As simple fuel pump upgrade and a stage 3 hybrid turbo is already hitting 340kW on 95 fuel. You can do that with 200k to spare vs buying a M140i that is clean.

The cost of modding N55s has come down quite a bit with the R&D done over the years (Pure turbos, Big boost, BYM turbo kits etc). So unless you already own a B58 car, I would stay with an N55. I for example would not drop 1M on a used 840i to get the B58 when I have a N55 640i I can drop a 20th of the money on a turbo to hit the 500hp figures.

If you don't have a car, then get the B58.

This convo is derailing faster than a Pantsu dropping at Mavs. The more we talk, the more topics come up to cover.

Don't get me wrong, as stated, a cooler upgrade should always be your main priority when you need cooling, that's fact.

I dropped my trial and tested upgrades and what worked and works for me and my driving style.

The argument regarding WMI acting as an intercooler is valid on both sides, I think you're missing the point I'm trying to make.
Yes, it cools her while on boost, for my needs, that's perfectly fine. But, the moment I let off, that cooling is gone. So, unless I am constantly driving her in boost there is no benefit from it.

Hell, if we want to get really technical now, and I know I'm gonna regret saying this, running eth mixes even offers better cooling properties since the air-fuel mix entering the cylinder is cooler, making the engine less prone to knock, leading to more timing and more boost.

I did not say anyone should jump to the B58 platform my guy I only mentioned it since it makes power so easily, you just wink at the car and you get +5kw. I know the N55 can make power, are you forgetting what I drive? The N55 just needs way more upgrades and replacements to make the power B58 can with way less. Once again, another topic that will keep us busy for the next 10 years.

 

[Pisancho]

Hell, if we want to get really technical now, and I know I'm gonna regret saying this, running eth mixes even offers better cooling properties since the air-fuel mix entering the cylinder is cooler, making the engine less prone to knock, leading to more timing and more boost.

Oh yeah, I did forget that during the period I had the stock cooler, I ran E10 the whole time. I just couldn't claim the ethanol from my company, so I chose to upgrade the cooler.

And yeah it is derailing the convo

 

[Teezoh]

Oh yeah, I did forget that during the period I had the stock cooler, I ran E10 the whole time. I just couldn't claim the ethanol from my company, so I chose to upgrade the cooler.

And yeah it is derailing the convo

Correct . When everything comes together, it makes that magic.

OP, in a nutshell. You have MHD, don't be afraid to drop in E10 and then test a Stage 2 map, the stock cooler can handle it if you are a disciplined driver. As always, log it, log it and log it some more. See what the car does and what works for you.

 

[Liam H]

In all honesty, the stock coolers hold more credit than what they are given. I'm still on stock to this day, ran it on Stage 2 without any problems.

Sure, it's an upgrade once you do it, but if you understand your car and don't drive it like a constant lunatic it handles Stage 2 just fine. You only heat soak in constant back2back runs but if you slam her and there is enough time to cruise for a bit after, the temps go down fairly quick on the stock cooler. You have MHD, that alone is a great guide since you have your temps at hand while you drive.

I decided to shift to 2+ on E20 recently, basically mixing E15 and letting the meth pick it up to E20 with the extra cooling while still on stock, still no problems. I'm not saying that a cooler upgrade is not better, it does make a difference and in the normal boost guide it should be one of your first upgrades.

Regarding the E Mix, get yourself some Eth, calculate what 10% of your tank capacity is and throw that amount into your tank at the pumps right before filling her up. That gives you E10. I'm pretty sure your fuel cap should indicate it too, have a look . These cars LOVE proper fueling.

I'll definitely give it a shot! Yeah, the car does het somewhat descent IAT, i never do consistent or back to back WOT pulls or even go more than half throttle when it's a hot day. I'm extremely aware of my temps.

 

[Pisancho]

Correct . When everything comes together, it makes that magic.

OP, in a nutshell. You have MHD, don't be afraid to drop in E10 and then test a Stage 2 map, the stock cooler can handle it if you are a disciplined driver. As always, log it, log it and log it some more. See what the car does and what works for you.

I had a hybrid turbo on the stock cooler. Another thing I forgot 🙈. Stock turbo should be more than fine. OP is PWG also, so with Eth, he should be able to get away with it for the usual friendly runs with mates etc.

 

[Teezoh]

I'll definitely give it a shot! Yeah, the car does het somewhat descent IAT, i never do consistent or back to back WOT pulls or even go more than half throttle when it's a hot day. I'm extremely aware of my temps.

I just have to ask, always curious about this. What MHD extra settings are you using and what are you set at? If you have the + Suite that is?

 

[Liam H]

Well I spoke too soon, the car is stuttering or missing with the new plugs on cold start. What can this be?