Well... I am really

The installation went so smoothly, the headers just slide on the engine studs like they should. We did not have any problem here with the alignment of the holes

The only fitment problem we faced was very minor and I say this is not an issue.. 2 holes on the front flange that connects the front header to A-pipe were misaligned ( the flange was twisted like 1 degree) like 2mm only...The only thing needed was use a kind of stick to align the holes and then insert 1 bolt and the use of grinding bit on the head of the powered-air wrench solved the problem in less than 1 minute...

Bulldog01 and I were really ... and were

However jumped in and wanted to mess with us....So, Gary broke off 2 studs on the Catalic Converter...:and we were like

But Gary was like and blamed the O-ring Gasket...and proceeded to to remove the Catalic Converter and then and remove and replace the broken studs...

Finally after some 15 mins of delay everything went perfect and we did the dyno....

Ah this guy was all around....

The gains over the baseline (with AEM CAI) were at least 15lbft starting as low as 3500 rpm and all the way to redline and a max Gain of 18 WHP...

Bulldog01 was and when he left he pulled off the like or Mod

Here are the pictures, due to their sizes, I will post the 5 MPEG videos of the dyno runs on ImageStation. (If someone wants to host them he has just to download them from Imagestation and host them... )

Thanks and Enjoy!


AEM CAI View #1:


AEM CAI View #2:


AEM CAI View #3:


Out of the box:


CLS strapped on the dyno:


CLS Engine Bay:


CLS Engine Bay left View:


Something is a pain in the ass of the CLS


LCD monitor to see the Dyno run in the waiting room


Dyno run #2 (Blue curve) is for AEM CAI only( plz ignore the red one it is mess up..thanks to flufy:


Stock Headers:


O2 sensor:


Stone Headers next to Stock Headers:


Stone Headers next to Stock Headers View #2:


Installation love:






Front Headers Installed


The only fitment correction needed:


And here is the misaligned hole filed with a air-powered drill:


Everything fits and we are almost done:


Hanger attachement:


Catalic Converter and


Installation Completed and NO leaks and NO resonance Sound:


Fan used for the last Dyno:


Dyno Graphs Before and After:


Ah... I am almost done I will have to upload the MPEGs Videos.

 

dope as heck

now wheres the groupbuy???

 

Nice.

 

why is DYNORUN 001 so much lower than 002?

 

was messing around... Ehmmm.. Open-loop mode... a.k.a The engine is warming up!...

lesson to be learned do NOT floor your CLS when the engine is warming up!

 

I bet after the computer adjusts it may produce more whp and torq

so what's the big diff between the Stone Headers and the Comptechs? Obviously the exterior coating is different.

 

I love the chrome look damn I hope they stay that way why are you calling the man

 

what u break??:P

 

Gary broke the lower 2 studs on the Catalic Converter

See this pic the lower 2 studs are brand new

 

I can't really read the dyno comparison graph too well, but you said the max gain was 19 whp? Isn't that sortof low for headers? I thought the gains were closer to 30 whp? Or is the 19 whp just subtracting the max power from run #2 from the max power from run #3? ... If so, do you know roughly what the max gain overall is for the Stone headers?

As I've said before I'm definitely interested in a GB on the Stone headers (if its ~$400), assuming the headers ship soon!

 

only 18 hp, aint that low??

 

Could you explain the dynos please..I'm confused

There was *almost* no TQ gain between before (just CAI) and after headers?

 

Okay.. I will be uploading a new cut-out of the dyno graph picture and disscussed..

Remeber the baseline had alredy CAI... Header over stock will show at least 25-35 WHP!... depending on the rpm range....If you install a CAI gains does NOT add up...

 

so ure saying 8 hp from CAI and then 18 from the headers total 26 HP?

 

I acutally... I can see at least 20 WHP after 6000 rpms.

 

Here is the cut-out Dyno:


As you can see... there are gains all across... each tick is 10 lbft of Torque 10 WHP... after 6000 rpms, there is at least 20 lbft of Torque gain all way to redline.

also note that the engine is not fully warmed up and as witnessed by Bulldog this makes a huge differemce ( just see the the first dyno run)..

Finally, this week, Bulldog is going back to Wangs; and will get the soft version of the runs so we can do more analysis.

 

NICE!!! when can we start this group buy?

 

I will start up the GB Tonight... How about that ?

Check the GB thread.

 

So, to be clear...what are the GAINS (TQ and HP), with the newest Stone Headers over stock (or at least the baseline).

 

Over stock I would say it is at least 25 WHP 25 lbft all across.

 

Those numbers still seem pretty low, considering Comptech advertises a 30+ whp gain on their headers and OBX are supposed to get about the same as Comptech.

Your original set of Stone headers outperformed the Comptechs by about 4 whp ... So I wonder whats wrong here?

 

Again... CT may have peak gain... and let me tell you this... you can influence the dyno the way you like it.... Check how we ignored the first dyno run because it was just crap... also when you have a stock baseline and the install the headers... you will see the maximum gain from the headers...once you install a CAI... Gains does not add up... Also, each car is tuned differently or not tuned at alll and I do not have the uncorrected numbers... It could be the correction STD factors are screwing the gains too..

A lot of factors... I posted 2 Dynos for the Stone headers... They are honest and not "touched-up" you like it or not it is up to yoo....

IMHO... I like the gains because I can see that Torque Curve stayed about 185-190 lbft all across to 6500 rpms! Just note that and do you have lower gains too... In addition note that at Redline WHP does not go below 220 WHP!

 

Those headers look better than comptech IMHO!!! Nashua do you think they will fade like the comptech's from the heat of the engine?

 

All SS will do... time will tell... also, I am now uploading some 38 MB of 5 MPEGs to image station

 

When I had the OBX installed (no intake) at Wangs, I showed 219.8hp max after headers (202.9 before) but after headers I had 199.8ft-lbs of torque vs. Builldog01s 194.6. Why does it look like there is 5ft-lbs less torque with the Stone and AEM vs. my OBX alone? I had 194.2ft-lbs of torque stock. Granted it is a different day and car but it seems odd to me. I would have expected a better torque gain with the AEM + Stone headers.

 

Those maximun TQ numbers are bogus, you have to drop those numbers. The number is high because of the Torque Multiplier of the Torque converter when it is slipping... after 3000 rpm you have the real numbers and the max TQ is 189.77 lbft at 3120 rpms.

 

Do the Stone headers intend on being CARB legal eventually? Or is that not even in consideration?

 

For the near the future the simple answer is no.. I need to research how difficult is to get a CA CARB exempt.

 

Available for 6 speed or only auto?

 

for now auto only... if we can have like 10 6-speed owners interested. I may work on making a custom batch... I need to be find out.

 

Nashua's dynos always looked jacked. No more dynos from you Nashua.

 

The dynos graphs are what they are ... They are not made up... take them for what they are worth.

 

For what it is worth, when I had my car dynoed at the same place as Nashua and Bulldog01, my 03' automatic was putting 202hp to the wheels stock...that works out to be a 22-23% loss of power if we believe Acura's 260hp at the crank...which sounds right...so I don't think that Nashua's numbers are inflated. I just don't think that the torque is as high as I expected. It looks the same (even after 3000rpm) as what I was getting for peak torque with the OBX without an intake...around 185ft-lbs. Not that it is bad...certainly better than stock, but I am not overly convinced that the gains are better than the OBX. I bet three pulls with each, OBX vs. Stone, and they would end up statistically the same. BUT, the Stone have no resonance at 2500rpm which is nice.

For now I'll stick with my OBX....even with the resonance. Like everything else, you get used to it.

 

I thought the original version of these Stone Headers were like 8hp over OBX's gain, right?

Can it be a fluke or something that the newest version of these headers get less gain?

 

they were 4lbft 4WHP more than OBX on my CLS.