ACE CS400 Dyno's Please

[Bobster]

Originally Posted by Hags86

Sorry to re-post from another thread but I hoping to get an answer and move forward and order some headers.

Being RHD I can go for the 250 or the 400. Other than 'the 250 is better at high revs and less so at lower revs' versus 'the 400 is better at lower revs and less so at high revs' I can't find any qualitative assessment of the two. Am I sacrificing 10% power at 4000rpm to get 2% better at 7000rpm on the 250? If that is the case I'd probably go with the 400.

If anyone can help please shout out otherwise I'll have to flip a coin!

The main plan is to optimise for track days and hopefully get a good bump for DD and flatten the torque curve. I think the 400 is better for linear torque but at what expense at the top end?

Driven both and own CS400

With CS400, HKS FP and CB and injen evolution intake I had heaps better low end and mid range torque but holds up well but not as good as B250 up top.

I'm back to stock airbox with Greddy Scoop, K&N Panel and mishmoto intake pipe. This setup lost me some low eng and mid range torque but pulls strong to redline like B250

[ThatAsianBradah]

Originally Posted by CSG Mike

You want the Edelbrock SC if you want low end power,not the Jackson Racing SC. The SC will amplify the header gains, and vice versa, with a good tune. If low end is what you want, get the Edelbrock + CS400.

That makes sense. With the EBSC the car is incredibly "torquey" at 1st/2nd gear 1k-3.5k. Assuming that the CS400 amplifies that even further would supposedly be an overkill to some, especially DDers, but for the freeway/highway spirited drives where 4th/5th gear will be utilized the most, the A-350 would benefit me the most.

The next question is whether or not I should get the H/OP/FP ceramic coated. I'm unsure of the with/without stance of such an add-on.

[CSG Mike]

Originally Posted by Hags86

Sorry to re-post from another thread but I hoping to get an answer and move forward and order some headers.

Being RHD I can go for the 250 or the 400. Other than 'the 250 is better at high revs and less so at lower revs' versus 'the 400 is better at lower revs and less so at high revs' I can't find any qualitative assessment of the two. Am I sacrificing 10% power at 4000rpm to get 2% better at 7000rpm on the 250? If that is the case I'd probably go with the 400.

If anyone can help please shout out otherwise I'll have to flip a coin!

The main plan is to optimise for track days and hopefully get a good bump for DD and flatten the torque curve. I think the 400 is better for linear torque but at what expense at the top end?

Go for the 250.

[CSG Mike]

Originally Posted by ThatAsianBradah

That makes sense. With the EBSC the car is incredibly "torquey" at 1st/2nd gear 1k-3.5k. Assuming that the CS400 amplifies that even further would supposedly be an overkill to some, especially DDers, but for the freeway/highway spirited drives where 4th/5th gear will be utilized the most, the A-350 would benefit me the most.

The next question is whether or not I should get the H/OP/FP ceramic coated. I'm unsure of the with/without stance of such an add-on.

With boost, I would recommend ceramic coating. It keeps your engine bay temps lower, and simultaneously better preserves exhaust gas energy for better scavenging. It's a win-win.

[Hags86]

Originally Posted by CSG Mike

Go for the 250.

Thanks Mike. The guys at Delicious suggested the 400. Maybe there is no right answer but can you please elaborate on your recommendation so I can make an more informed decision?

[CSG Mike]

Originally Posted by Hags86

Thanks Mike. The guys at Delicious suggested the 400. Maybe there is no right answer but can you please elaborate on your recommendation so I can make an more informed decision?

Your posts, subjectively, make me believe you like the power to be there when you wind out the engine to the higher RPMs.

[Kodename47]

I would agree with @CSG Mike that a PD blower would suit a manifold that works better at higher RPM.

[Mark@Abbey m/s]

Originally Posted by JDM4E

Funny how the curve is different od Dynapack vs roller dyno. Or is it tuned ""not as good"?

do you mean the way a roller dyno smooths the curves out?

[JDM4E]

Originally Posted by Mark@Abbey m/s

do you mean the way a roller dyno smooths the curves out?

yep

[ImportPer4mance_]

Originally Posted by Kodename47

CS400 and high flow cat, otherwise stock exhaust. Tuned by Mark at Abbey Motorsport. Lower line is stock car.

I thought the CS400 was meant to get rid of the dreaded torque dip? The dip here is still quite prominent I'm debating between the ACE CS400 and the PSR UEL. Had my eyes set on the CS400 before I saw some of the dyno's on here. CS400 is 1.1k more than the PSR and I'm really struggling to see why..

Anyone else who's NA have dyno's of the CS400? There really aren't many around.

Sadly we don't even have CSG or Delicious tuning here in Melbourne to help out haha

[CSG Mike]

Originally Posted by ImportPer4mance_

I thought the CS400 was meant to get rid of the dreaded torque dip? The dip here is still quite prominent I'm debating between the ACE CS400 and the PSR UEL. Had my eyes set on the CS400 before I saw some of the dyno's on here. CS400 is 1.1k more than the PSR and I'm really struggling to see why..

Anyone else who's NA have dyno's of the CS400? There really aren't many around.

Sadly we don't even have CSG or Delicious tuning here in Melbourne to help out haha

It does get rid of the torque dip, provided your tune is able to do so.

CSG and DT offer international support and tuning.

[Kodename47]

Originally Posted by ImportPer4mance_

I thought the CS400 was meant to get rid of the dreaded torque dip? The dip here is still quite prominent

This is a more recent tune from the same guy:

[ImportPer4mance_]

Originally Posted by CSG Mike

It does get rid of the torque dip, provided your tune is able to do so.

CSG and DT offer international support and tuning.

Oh, awesome! I think the only vendor that sells them in Melbourne are HARROP, so if I go for them, will it be possible to just contact you guys in regards with the tuning process etc. I don't have an OFT or anything haha, so I'm guessing I'll need to get one if I'm getting an overseas tune from you guys?

Also, how does the cs400 compare to the PSR/TOMEI UEL? As someone who has only run stock headers & is pretty much relying on info available online, I'm quite inexperienced with this kinda stuff

[ImportPer4mance_]

Originally Posted by Kodename47

This is a more recent tune from the same guy:

Oh, that's much better! Is that with a full exhaust or just the cs400 bolted on with the rest of the exhaust stock?

Thanks!!