Any header updates?
Lead Lap
Joined: Mar 2004
Posts: 503
Likes: 0
From: New York
Faq's , I think everybody was expecting this amazing 30 hp which didnt happen. Releasing dyno number of 5 or 6 hp would kill the sale of these. About a min of 1500 to buy and install these can not be justified by 5-6 hp.
Originally Posted by Fisher503
Faq's , I think everybody was expecting this amazing 30 hp which didnt happen. Releasing dyno number of 5 or 6 hp would kill the sale of these. About a min of 1500 to buy and install these can not be justified by 5-6 hp.
I guess there are certain people who intend to spoil this for everyone and get any informative thread locked for their own personal reasons. If you read the original header thread, the gains were more than 5-6, but not the expected amount. The dyno chart showed a clear 15hp under the curve after 5000rpm. John has said this many time, theory is just theory until it's slapped on the car and actually applied.
Please keep in mind this thread is primarily for those who have purchased the headers and are asking about installation and queue times. If you'd like to be argumentative, please take it to PM.
Originally Posted by gawd
Yes, sorry for for the misunderstanding there. The gains are still the same as they were when the headers where intially installed. There is a noticable difference at higher RPMs. I thought everyone wanted an update from the last time I posted until now. Didn't mean to scare everyone 
Lexus Champion
Joined: Feb 2001
Posts: 3,124
Likes: 32
From: Texas
Originally Posted by Fisher503
Faq's , I think everybody was expecting this amazing 30 hp which didnt happen. Releasing dyno number of 5 or 6 hp would kill the sale of these. About a min of 1500 to buy and install these can not be justified by 5-6 hp.
Lexus Champion
Joined: Feb 2001
Posts: 3,124
Likes: 32
From: Texas
Originally Posted by JPI
Do you have any dyno numbers? Shouldn't the manufacture dyno tested the manifold before releasing them to the public? Are we missing something here?
JP Importz
JP Importz
This subject has been addressed fully and multiple times in the header thread.
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation
Joe Kucinski
Lexus LC500 Convertible Auction: A Preview of Rising Values?
Brett Foote
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler
Michael S. Palmer
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)
Joe Kucinski
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!
Brett Foote
Top 10 Reasons to Buy a Lexus TX 550h+ (& 3 Reasons to AVOID!)
Michael S. Palmer
Top 10 Lexus & Toyota Models of the 1990s RANKED!
Joe Kucinski
10 Great Toyotas That Could Have Been Lexus Models
Joe Kucinski
Thread Starter
Lexus Test Driver
Joined: Jun 2002
Posts: 869
Likes: 1
From: California
Originally Posted by gawd
Yes, sorry for for the misunderstanding there. The gains are still the same as they were when the headers where intially installed. There is a noticable difference at higher RPMs. I thought everyone wanted an update from the last time I posted until now. Didn't mean to scare everyone
Whew! I obviously misinterpreted your prior post, gawd. This makes more sense, just wanted to clarify. Thanks!The benefit/cost ratio has been thoroughly discussed in the initial thread guys (as jbrady correctly states).
I intended this thread to be more for those already committed and for any install advice or updates from gawd on the performance etc.
I think if anyone was expecting 30 HP from just the headers, they were being unrealistic. Not saying it was impossible, just unlikely. Now, 15 to 20 HP- especially after proper tuning- is pretty good IMO. Whether or not it is worth the cost is strictly a personal call. I respect other's opinions on the matter, let's ALL do the same for each other....
Originally Posted by gawd
Yes, sorry for for the misunderstanding there. The gains are still the same as they were when the headers where intially installed. There is a noticable difference at higher RPMs. I thought everyone wanted an update from the last time I posted until now. Didn't mean to scare everyone
Originally Posted by jbrady
This subject has been addressed fully and multiple times in the header thread.
Lead Lap
Joined: Mar 2004
Posts: 503
Likes: 0
From: New York
Guys not disrespect just getting a little frustrated trying to figure out whether or not to do this mod. The last thread got so long I don't know if I can even remember half of it. Hope to hear some personal experiences from all who get them installed. Maybe a comparison to a tc or Supra rear would help some guys like (felt like 30% or 40% of the gain that I felt when I added my TC or Rear you know). Thanks for everyones time.