Interest in new headers for the GS models??? Let me know
11-16-09, 01:24 PM
#16
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The SC400 headers i am selling dynoed anywhere from 17 to 25whp gain. Keep in mind different dyno's were used for testing and the customers had different setups on their cars. You should expect similar gains for the v8 GS models and probably about 15-20whp for the GS300's.
Of course, i will test and provide actual dyno numbers once i have the final product. For now i just need to see interest. Please make sure to include which model you have when you post. Thanks.
Of course, i will test and provide actual dyno numbers once i have the final product. For now i just need to see interest. Please make sure to include which model you have when you post. Thanks.
11-16-09, 09:37 PM
#18
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The SC400 headers i am selling dynoed anywhere from 17 to 25whp gain. Keep in mind different dyno's were used for testing and the customers had different setups on their cars. You should expect similar gains for the v8 GS models and probably about 15-20whp for the GS300's.
Of course, i will test and provide actual dyno numbers once i have the final product. For now i just need to see interest. Please make sure to include which model you have when you post. Thanks.
Of course, i will test and provide actual dyno numbers once i have the final product. For now i just need to see interest. Please make sure to include which model you have when you post. Thanks.
11-17-09, 01:29 AM
#19
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I believe for maximum performance it is better to remove the two pre-cats however if people want to retain them in place then i will design something that will allow it. I will let the people decide what they want and go from there.
11-17-09, 08:32 AM
#20
I would definitely be interested in 304 ( even better -321 SST headers for a little more $$ in material costs ) stainless headers for the GS430. I would prefer to keep my precats, though, since I've already removed my third cat and replaced it with an X-pipe set-up. Personally I would want my stainless headers Jet Hot coated, too. Also please machine the crush gasket groove into the collector interface with the precats. You make them and I'll buy a set!
11-18-09, 01:48 AM
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I do not have a dyno sheet to post as it was done two years ago and i dont have a copy. It will be a direct bolt on, remove stock manifolds, bolt on new ones. No need to remove the steering rack.
11-18-09, 03:36 AM
#24
As another member pointed out, I would also want to keep the precats and with that said, I would prefer if the triangular/cat mounting flanges have the proper machined groove for the crush gasket. FITMENT would be paramount to HP in my opinion, of course they will perform better over stock but there is nothing more annoying then dealing with improper fitment during an header installation. When flange angles aren't precise and gaskets don't line up perfectly etc., this usually leads to the most annoying exhaust leak noise. Oh, and 1/2" thickness's for the precat and head flange's would be great.
Please keep us Posted.
11-22-09, 08:07 AM
#25
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i need it long tube like the sc400 headers on ur site its bitter to be single pipe i dont need my cat its ok withe me
im waiting for the headers lol
