If you're looking for more power, your best option would be to do a speed density conversion, i.e cone filter with MAF delete.


Heatsoak is not an issue with cone filters.


Regularly, a speed density conversion on a setup similar to yours (somewhat stock?) would yield around ~20whp maybe.


But if you're only doing bolt-ons, I would stick with the airbox for now as it won't be much of a hindrance performance wise. You're better off spending the money on something else.

 

How does this density conversion work? Also what type of other mods do you mean? And if a proper cone setup is better I'll go with that, I'm just more of a function over fashion guy and wouldn't want to waste my money

 

I'll try to explain this the best I can.


Speed density utilizes a MAP sensor for readings rather than the standard MAF sensor. In order to do that, a MAP sensor must be installed. I don't know about EDM Evos, but I think there should be a MAP sensor tapped in the intake manifold from the factory.


This MAP sensor should be upgraded to a 4 bar MAP sensor. I think the factory one is a 3 bar, not sure. Anyhow, if you're not going past 25 psi then you should be fine with the factory MAP sensor IF I'm correct in it being a 3 bar MAP sensor. If it's less then you'll need to upgrade.


The MAF sensor gets deleted. Some tuners will ask for an AIT sensor (Air Intake Temperature) to be installed to complete the speed density tune, others will utilize the factory fuel temperature sensor. Again, I don't know much about the EDM Evos, but I don't think they came with fuel temperature sensors, meaning you'll be obliged to install an AIT sensor that gets connected to the factory MAF cable.


Now think of it this way, do I want to spend money on a Speed density setup, which costs around $300 in parts only for a few more ponies, or should I spend this money on something else?


The speed density conversion really shines when you've surpassed the bolt-on modification stage.


However, there is an upside to a speed density conversion. IF you ever get a boost leak with a MAF sensor, bad things happen, i.e the car will sometimes stutter / shudder / bog or whatever you want to call it. With a speed density conversion, even if your intercooler pipe is not bolted on, it will still run like normal.

 

Ok, I partially understand that. I don't understand how that makes more power but I guess I don't need to.... Like I said, I'm not looking to squeeze every last horse so I think the money could be better spent elsewhere tbh.

Back to my airbox dilemma. I've found someone who will ship me the grimmspeed EBC and the ETS intake for about £275. Is that the way to go? Obviously I'd rather not have to replace the airbox but if a ETS intake is better, that's what I'll get

Thanks

 

Like I said, with your power goals being minimal, it seems like you're just trying to enjoy your car, so keep the airbox there's no need for an intake. The airbox is still good for 400hp and I doubt you'll reach that with your minimal modifications.

 

Sorry to drag this out mate and i do appreciate the help, but what sort of mods are we talking to hit around or in excess if 400bhp? Let's say I've got a 3" turbo back decat, decent induction kit, walbro 255, EBC, decent IC pipes, forge DV, what else? I don't mind a work in progress but I draw the line at turbos and internals really

Thanks

 

Depends on the fuel used. I'm guessing you guys use 93 octane in England?

Nevertheless, with those parts you mentioned + a 4" intercooler kit, ported exhaust manifold, ported intake manifold, ported throttle, and a speed density conversion. That should get you to 400 comfortably.

 

my opinion I have the ets intake not the speed density one. And you allow to keep the MAF sensor. I heard a lot of bad experience when you take that away from the car. That is just my personal opinion.

 

also I feel the big difference with the ets intake and the combination of the ets intecooler and piping.

 

Bad experience with speed density? I don't think so... If anything, it's much much better than a MAF setup.

Unless the tuner doesn't know how to tune, then I can see why someone would face issues with a speed density conversion.

 

I run the decent stuff, shell v-power, 99 Ron I think but I'm not sure what that equates to over there?? Ok, quite a list there... I think I'll get all the mods I said done, get it remapped and then decide where to go from there. 400 was the number I had in my head so id like to try and get there really. When you say about the intercooler kit, do you mean a new intercooler or basically just derestricting the standard one?

 

No you'll require a new intercooler, anything larger than a 3" intercooler is adequate for your setup, I would recommend a 3.5" or 4" though. The stock intercooler doesn't really work that well, it rapidly heatsoaks.

I think 99 RON is somewhere around 94-95 AKI (U.S classification), that should pretty much give you the upper hand in achieving your goals. Would you happen to know if Ethanol is added into your fuel?

 

agreed with faisalm I got the 4" and is awesome. I will go with the bigger one in case that one day you want to go higger in power.

 

Yeah, after a quick google i think it's roughly 10%, but that's based on an article that's a few years old. Is ethanol a good thing? What brand intercooler should I look for? I've heard about some pretty crappy fitting ones and would obviously want to avoid them....

 

I got ets short route black piping with intercooler 4" with ets stencil on the front. I love it and I will not change it for nothing. avoid the ebay ones.