[LaKuan]

I see. I thought by your signature that you were already tuned. If I pull the trigger on a tune I want to have fueling upgrades in place with a WMI/ low pressure fuel pump at minimum to maximize the potential of a tune.

Yeah, me too. In this case ill tune, run the car like that in the mean time. When i get the other bolt ons, ill re-tune with the fuel pump and possibly big turbos.

 

[PQ50SOH]

Yeah, me too. In this case ill tune, run the car like that in the mean time. When i get the other bolt ons, ill re-tune with the fuel pump and possibly big turbos.

That’s why the JB4 is nice. You can add on the bolt ons that don’t require a tune and see incremental gains. When you’re ready to tune you can get ~80% of your JB4 money back by selling it used. What is it about $500 for each retune?

 

[LaKuan]

That’s why the JB4 is nice. You can add on the bolt ons that don’t require a tune and see incremental gains. When you’re ready to tune you can get ~80% of your JB4 money back by selling it used. What is it about $500 for each retune?

True, the license is about 300 plus whatever the tuner wants to charge for tune, so around 800-1000 for the whole deal. But ive had jb4 before and didnt like it that much, ive rather pay a good tuner like ams or racebox and have the car running healthy.

 

[LaKuan]

I’m also curious about how do you gain much by bolting 3” LDP onto the pitiful stock CBE?

This case im doing full 3” downpipes, wich are the upper downpipes and lower downpipes in a single piece with a mid pipe. Wich will shurely increase vacuum. So no cats but the axle back, will also help keep the car quiet and giving good hp.

 

[Blackhawk77]

Are any of the turbo upgrades available really considered big turbo or even medium

 

[Ddnspider]

I believe you mean decreased back pressure. I run full catless downpipes and swapped the mid and y but kept the stock muffler. Good flow but a tame idle and cruise.

 

[PQ50SOH]

This case im doing full 3” downpipes, wich are the upper downpipes and lower downpipes in a single piece with a mid pipe. Wich will shurely increase vacuum. So no cats but the axle back, will also help keep the car quiet and giving good hp.

Sounds like you have a plan!
Just FYI
There are a quite a few on here that are very knowledgeable and helpful. @Ddnspider is definitely one of them.

 

[jodedor]

Jeez...I am off the forum for a few hours and all hell breaks loose.

OP. When you join a forum and want to share information, you post it. If I wanted to find your whatever thread or instagtam or whatever you have out there, I can search for it.

We had a youtuber who would create a new thread every time he made a video and put the link in the first post.

We dont need this. We can search youtube.

A post like that youtuber looks like attention seeking behavior.

 

[Batell]

Are any of the turbo upgrades available really considered big turbo or even medium

Correct me if I am wrong, but I have not seen any people running "big turbos"

 

[Ddnspider]

Correct me if I am wrong, but I have not seen any people running "big turbos"

There isn't guy using Garrett's that made 900whp.

 

[Blackhawk77]

That car has G25(not sure on the compressor/turbine size) turbos if I recall. Everything is relative but I guess but when I think of "big" turbo I am imagining a much larger turbo. I'm guessing they went as big as they could in the factory location

There isn't guy using Garrett's that made 900whp.

 

[Ddnspider]

That car has G25(not sure on the compressor/turbine size) turbos if I recall. Everything is relative but I guess but when I think of "big" turbo I am imagining a much larger turbo. I'm guessing they went as big as they could in the factory location

It's 900whp with those turbos. You're not going to see twin 67mms on this platform for anything other than class racing.

 

[JNR]

Stock turbos are so small, just about anything else just would seem 'big'...lol

Do have to keep in mind that only three (3) relatively small cylinders are feeding each turbo, so they really don't need to be all that big in reality.

 

[jodedor]

Stock turbos are so small, just about anything else just would seem 'big'...lol

Do have to keep in mind that only three (3) relatively small cylinders are feeding each turbo, so they really don't need to be all that big in reality.

They just run out of breath like the one in the 2015+ wrx. Max HP beyond 6000 RPM is not impressive at all even with a downpipe and tune.

I get it that the engineers sized it for the required power, and efficiency. But they didnt leave much headroom.

 

[Ddnspider]

They just run out of breath like the one in the 2015+ wrx. Max HP beyond 6000 RPM is not impressive at all even with a downpipe and tune.

I get it that the engineers sized it for the required power, and efficiency. But they didnt leave much headroom.

Honestly I thought the OEM engineers did a killer job. They designed a 300whp engine that with boltons and a tune will add almost 200whp before being tapped out, and the engine limit is well above that. The torque curve is what makes the car fun to drive and they hit that spot on.

 

[jodedor]

Honestly I thought the OEM engineers did a killer job. They designed a 300whp engine that with boltons and a tune will add almost 200whp before being tapped out, and the engine limit is well above that. The torque curve is what makes the car fun to drive and they hit that spot on.

I should have clarified...I was thinking more RS than S or Lux.

Yes, if you start with an S or Lux, there is room.

 

[Ddnspider]

I should have clarified...I was thinking more RS than S or Lux.

Yes, if you start with an S or Lux, there is room.

It's a fair point that the RS gains are less, but even 75whp and 100+ wtrq isn't peanuts for bolton's and a tune. I'm not well versed in the BMW or Audi platforms but does their high end model gain more from those mods?

 

[17awdQ50P]

It's a fair point that the RS gains are less, but even 75whp and 100+ wtrq isn't peanuts for bolton's and a tune. I'm not well versed in the BMW or Audi platforms but does their high end model gain more from those mods?

Audi b8/b8.5/b9 s4/s5 very comparable gains with bolt ons and tune variations, not more though. We all 3L V6 with FI. B9 with TT direct injection similar to ours. B8/B8.5 supercharged direct injection.

 

[jodedor]

It's a fair point that the RS gains are less, but even 75whp and 100+ wtrq isn't peanuts for bolton's and a tune. I'm not well versed in the BMW or Audi platforms but does their high end model gain more from those mods?

Not sure about the European brands. I have seen some really big gains on Audis, but cant recall any. I will probably end up googling it or looking it up on youtube tonight.

Yes, there are HP gains and 70+ whp max gain is great. I'm interested in the top end.

I know all the torque and power gains at the lower range are great. No doubt.

It is that power cliff that bugs me. It is not a deal breaker. I just wish the turbos had some capacity for top end...again looking at it from an RS perspective.

 

[17awdQ50P]

Not sure about the European brands. I have seen some really big gains on Audis, but cant recall any. I will probably end up googling it or looking it up on youtube tonight.

Yes, there are HP gains and 70+ whp max gain is great. I'm interested in the top end.

I know all the torque and power gains at the lower range are great. No doubt.

It is that power cliff that bugs me. It is not a deal breaker. I just wish the turbos had some capacity for top end...again looking at it from an RS perspective.

The overall gains on any version but especially non RS are great. But I do agree that power cliff is disappointing.

I’ve been modding my uncles audi b8.5 s5 for him, currently just FBO + stage 2 tune. His car pulls and keeps making power all the way through redline which is now 7200. We have more overall gains, he’s got more top end gains. The B9 S4/S5 are similar story to us though. Just the nature of these small twin turbo 3L V6 setups.

I’ll have to eventually go pure turbos on E I think to get my top end fix, unless dropbears turbo setup is even more top end favorable closer to AMS setup.