Sikky V2 Header Exhaust Comparison (Now on sale)
01-04-17, 08:45 AM
#17
Yes, the runners on these headers are now 1 7/8" (they used to be 1 3/4")
This version does require the dip stick to be relocated. With the headers we do include a new dip stick tube that was purpose built for our headers.
Currently we're no longer offering the V1 headers.
Currently we're no longer offering the V1 headers.
01-04-17, 02:40 PM
#20
So you pick up 62rwhp (which equates to 75 to 80 flywheel) just from extractors and exhaust I don't think so, Lexus would not put such a restricted standard exhaust on a performance car in the first place????? PS I am not knocking your product I just find the figures hard to believe.
Last edited by isfvss; 01-04-17 at 02:45 PM.
01-04-17, 03:34 PM
#21
So you pick up 62rwhp (which equates to 75 to 80 flywheel) just from extractors and exhaust I don't think so, Lexus would not put such a restricted standard exhaust on a performance car in the first place????? PS I am not knocking your product I just find the figures hard to believe.
As someone else posted, those numbers are right in line with what RR Racing has gotten with the same set-up (using PPE headers), so it's not hard to believe.
01-04-17, 05:25 PM
#23
Many cars ago I had an Acura 3.2CLS making 260hp. Just headers on that car gave 32rwhp religiously. Why did Acura leave all that horsepower on the table, who knows, but they did. Further odd because the 3.2L with headers was better than most of the 3.5L Acura engines that followed???🤔
01-04-17, 05:35 PM
#24
Not only is it not hard to believe, it's been proven true by many owners already.
Many cars ago I had an Acura 3.2CLS making 260hp. Just headers on that car gave 32rwhp religiously. Why did Acura leave all that horsepower on the table, who knows, but they did. Further odd because the 3.2L with headers was better than most of the 3.5L Acura engines that followed???🤔
Many cars ago I had an Acura 3.2CLS making 260hp. Just headers on that car gave 32rwhp religiously. Why did Acura leave all that horsepower on the table, who knows, but they did. Further odd because the 3.2L with headers was better than most of the 3.5L Acura engines that followed???🤔
01-04-17, 06:21 PM
#25
Pole Position
Sounds like the HP left on the table with the ISF/2UR-GSE motor with headers!
01-04-17, 08:20 PM
#27
Driver School Candidate
So you pick up 62rwhp (which equates to 75 to 80 flywheel) just from extractors and exhaust I don't think so, Lexus would not put such a restricted standard exhaust on a performance car in the first place????? PS I am not knocking your product I just find the figures hard to believe.
I think the main reason are the cats that are part of the headers in most of the case, second in the design.
Lexus and any other manufacturer has to put restricted exhausts on any car because of emissions.
Well we are just looking at peak numbers right now. There maybe some midrange gains from the bigger runners.
01-04-17, 10:34 PM
#28
The only way I would believe the gains is if Sikky would send a set over to OZ free of charge LOL ( I would be your ambassador) as I am getting a dyno tune in spring, HPS,K&N Xforce, so far. Its the biggest gain on any car I have heard of for just extractor and exhaust cheers.
01-05-17, 01:07 AM
#29
The only way I would believe the gains is if Sikky would send a set over to OZ free of charge LOL ( I would be your ambassador) as I am getting a dyno tune in spring, HPS,K&N Xforce, so far. Its the biggest gain on any car I have heard of for just extractor and exhaust cheers.
My ISF went from 348whp baseline bone stock to 416whp with just the addition of PPE headers, exhaust + tune. That's with high flow cats too! Without cats it would have picked up another +8whp or so.
Over 70whp by just opening up the exhaust and tune, this baby is very restrictive from the factory.
01-05-17, 01:26 AM
#30
Yup, believe it.
My ISF went from 348whp baseline bone stock to 416whp with just the addition of PPE headers, exhaust + tune. That's with high flow cats too! Without cats it would have picked up another +8whp or so.
Over 70whp by just opening up the exhaust and tune, this baby is very restrictive from the factory.
My ISF went from 348whp baseline bone stock to 416whp with just the addition of PPE headers, exhaust + tune. That's with high flow cats too! Without cats it would have picked up another +8whp or so.
Over 70whp by just opening up the exhaust and tune, this baby is very restrictive from the factory.