I completely agree, I'm going by some more shops tommorow and I'll take some pics of the labor books they use. My guy is definitely cheap, but I'll se if I can get us a better read of the going market price. The best thing to do is to address issues such as heat shields and cat relocation( if any). I quite confident that we will be getting gains of some sort, whether each individual can justify them is entirely up to that person.

 

There's no way in Hell with Intake and Exhaust Mods that those Headers are going to Lose HP on a 4 Quad Cam 32 Valve Motor. They will Dyno increaded HP according to your Mods. Look at the stock Headers. I'm going on the Records to say it. I'll take those Headers over stock all Day long.

Would be nice if we could get one set to test fit on all Lexus 400 models. If they match the ports and have the clearence I'll get them installl my SC400 ASAP.


J Brady hope your Mom is doing OK. And thanks for all of your work. You done GOOD !

 

Agreed.

I think if the install is DIY the Dyno numbers become even less important.

 

QUOTE=CinFulxGS4]I don't think wanting Dyno's is any less important in this situation. It is awesome that someone did this for those who want regardless of gains, and those individuals will not care about a dyno... but to maximize sales and effort I think a dyno is just a good idea.[/QUOTE]




they look nice but numbers are what the game is about right? question , what can it really do for the money

 

I think at $600 if they could be installed DIY it would probably be worth the looks, sound, and flow to most people here... not to me personally, the rest of my Mods are going to be geared for performance...

At $600.00 and another $500 for install (if that is how it shakes out) I personally would have to see a significant gain in HP.

Check your PM's Ed.

 

People are shelling out 700-1k for exhausts....they give no gains cause of the cats and headers but look how many people have exhaust.......Ahhh but they pay it for the sound...so your spending 700-1k to make ur car sound cooler.

Do I have to mention the 1200.00 tail lights???

These are fantastically priced. Look good and I guarontee 100% they will make more power than stock. If poeple are insistant on having dyno #'s before buying then dont buy them, and dont post anymore in this thread cause you polluting what is trying to be accomplished here.

P.S.. My 5 hour quote was in CAD funds and a full fabrication of a new y pipe to my cat back exaust fyi.

 

Yes

No

I am sure they will make more power than stock too, just thought it would be nice to know how much before shelling out the $$$. I knew full well exhaust would just be for sound and add to overall driving enjoyment but at least I could install it myself in an hour.

Unless they are either easy to install or add decent HP I won't... Thus why some of us are interested in the Dyno numbers since it looks like they are not going to be easy to install. Why eliminate some of us that are interested in making a choice based on performance?

Why is the only thing trying to be accomplished here bashing those of us with performance questions? What else is more important to accomplish here than talking about the headers, what they mean to performance, and their ease of installation?

 

The whole point of this header project was to see or prove that the stock header design was very restrictive. The reason others want to see dynos is to see how restrictive the stock headers were. I commend Jbrady on his work here but others want to see final numbers (im sure there will be a definite increase) to determine if this route is worth it. Some arent easily swayed by hype and need actual proof. That is all.

Like I said, Im quite optimistic about these new headers, but if others need more info before pulling the trigger, let them be and let the product sell itself.

 

I think just by looking at it we can determine it is quite restricive... as you stated, the big question is whether removing this restriction is going to make a worth while difference in performance in our particular application and engine.

Can't wait to see the Dyno and hear the story once it's on!

 

I'd advise folks who are on the fence about the price / value of this modification to wait for the first set of dynoS (plural) to get multiple points of data before making your decision. Just smart to make sure the results are repeatable or if there are any issues with the initial dyno results - to give some added assurance.

I hope to get someone who knows 100% how to dyno a Lexus xx to do a before / after. If they're willing (haven't asked yet) I'm going to see if SRT can install mine and also re-tune the ECU to take advantage of the headers, along with before / after dynos.

IMO the 230rwhp Gawd got is a little low but is definitely not unheard of. I've seen at least one other GS with similar mods put down the same numbers.

Please note this is one of the most heavily traffic'd posts on CL, with over 600 replies so far. There are lots of email notifications that go out upon posting in this thread - I for one...although I follow it with great interest... am trying to somewhar refrain from posting Q&A until we see what kind of info we're going to get from the initial install. Until we do, it's just conjecture

 

Dave Rules.

Sounds awesome Dave, Keep us informed! Will be great to know what effect they will have with the SC since I know at least 2 of us that would plan on using these with a SC kit.

 

Niel at Rush Imports told me it takes him 8 hours to install thiers on a Soarer and that it usually takes 11 hours or so for a first-timer. Since JBrady's headers are much shorter I am wondering if they may take less time to install than Rush's long-tube headers.

 

Got around to a few more shops today, looks like the shop time is bascially the same in every shop that uses the book/alldata computer rate, which is 15.3 hrs to complete both sides. However, I was able to negotiate with almost every shop and the highest quote I received was 600.00, so that's some good news. The majority of the shops told me that they could complete the swap around the 10 hour mark





Now for you Houston people on the list, I have absolutely fantastic news. I found a shop who's owner owns a SC430 with custom headers. He pulled and swapped them himself on his car and another GS400 that is running a 6 speed tranny ( another story). He's very acustomed to the process now and said the last job took him less than 5 hrs, so I ended up getting a quote for 150.00 out the door He is also nice enough to take pics for you DIY guys, so this might work out very well. I'll keep everyone informed.

 

Awesome news... Did he mention for the DIY'ers if the engine would need to be un-mounted?

 

Atleast one of the mounts will need to be undone, I don't know if he will do both or just the driver's side. While we're on that subject, when I spoke to the fabricator, he stated he did a set of headers for the Tundra and was faced with the same situation. The fabricator's solution was to undo several 12mm bolts that hold the bracket/brace between the block and exhaust manifold. Once these are removed, you can simply slide the entire section out.

When I ran this past the shop, he said it is doable, but said there maybe clearance issues that will need the mount to be undone anyway. I'll know more next week.