DFW Tech Day
Thread Starter
Joined: Jan 2006
Posts: 11,204
Likes: 32
From: San Antonio/I miss DFW, TX
I would pair a plenum spacer with high flow cats/test pipes over buying any aftermarket exhaust any day.........
sure the exhaust is a noticable difference/visually on the car, but the hfc's will yeild better results and sound nice too.....
yes, definately...
-J
also if you have a revup motor you will want to replace the lower plenum when you add the spacer or you won't get much gains. You can replace the lower with an MREV2 for best gains ($400) or... shameless plug... if you want less gains than the MREV2 but want to save some cash you can buy a lower plenum off a non revup motor (which I have for sale in the texas local for sale area
)... again you only have to worry about this if you have the rev up engine...
Registered User
Joined: Oct 2008
Posts: 857
Likes: 0
From: Texas
# --- Screen Name -Real name-- Car --- Mod to install
1 – Jason – 350Z – I have mods I plan on doing myself this day.
2. AcidJake75 - 350z - Rear wiper delete (if its not done already) and help with installs and assist with beer drinkin..
3. - Fithamoto - 350Z - Front headlight & tail light swap.
4. - Corbin or Bluz370- 370z- mods spring mt mod (if its not done yet),and for sure diff and tranny fluid.
5 - Austin or AUS10TAT10US- 350Z - possibly need help painting headlights and handle, rear coilover adjustment (if not done already and yall can see my stock bumper blacked out and filled...just got it put on today!)
6. - Steve or Neverlift - 350z - SS brake lines and SS clutch Line. Flush clutch and brake fluid.
7. Squeaky350 - Jeremy - 350z - rear camber kit and toe bolts. lower car - coilovers already installed. stance
8. 3hree5ive0ero - Chris - 350Z - SS clutch line, flush clutch, hatch shocks (if not done).. maybe replace bushings
9. 05 ppw z33 - Joe - 350Z - Dehazing headlights and maybe fixing minor scratches
10. LegionnaireZ - Anthony - 350z - Would like to see if the dehaze will work. since the 19s are back on would like to test fit spacers. Stage 2 Strut Hatch.
11. MrWatchDawg - Mo - 350z - need all fluids changed , and hopefully i can do exhaust if i have it by than
12. ppat1989 - Patrick - replace all 4 brake rotors
HELPER LIST:
1. DarkRoam - - ---
2. Gibbs
3. cow
4. quakerroatmeal - Thinking of bringing some cleaning supplies and showing folks how to properly clean/dry/clay bar/wax a car if anybody is interested.
5. tsar - Maybe coilover / camber arm install.
6. JLSGOZ (Jody) I can be a good gopheress
Like the Idea of the detail FYI Q
1 – Jason – 350Z – I have mods I plan on doing myself this day.
2. AcidJake75 - 350z - Rear wiper delete (if its not done already) and help with installs and assist with beer drinkin..
3. - Fithamoto - 350Z - Front headlight & tail light swap.
4. - Corbin or Bluz370- 370z- mods spring mt mod (if its not done yet),and for sure diff and tranny fluid.
5 - Austin or AUS10TAT10US- 350Z - possibly need help painting headlights and handle, rear coilover adjustment (if not done already and yall can see my stock bumper blacked out and filled...just got it put on today!)
6. - Steve or Neverlift - 350z - SS brake lines and SS clutch Line. Flush clutch and brake fluid.
7. Squeaky350 - Jeremy - 350z - rear camber kit and toe bolts. lower car - coilovers already installed. stance
8. 3hree5ive0ero - Chris - 350Z - SS clutch line, flush clutch, hatch shocks (if not done).. maybe replace bushings
9. 05 ppw z33 - Joe - 350Z - Dehazing headlights and maybe fixing minor scratches
10. LegionnaireZ - Anthony - 350z - Would like to see if the dehaze will work. since the 19s are back on would like to test fit spacers. Stage 2 Strut Hatch.
11. MrWatchDawg - Mo - 350z - need all fluids changed , and hopefully i can do exhaust if i have it by than
12. ppat1989 - Patrick - replace all 4 brake rotors
HELPER LIST:
1. DarkRoam - - ---
2. Gibbs
3. cow
4. quakerroatmeal - Thinking of bringing some cleaning supplies and showing folks how to properly clean/dry/clay bar/wax a car if anybody is interested.
5. tsar - Maybe coilover / camber arm install.
6. JLSGOZ (Jody) I can be a good gopheress
Like the Idea of the detail FYI Q
what year is your Z? You are listing like $700 plus in mods... I agree with Jason you should go plenum spacer and HFC's for best bang for the buck...
also if you have a revup motor you will want to replace the lower plenum when you add the spacer or you won't get much gains. You can replace the lower with an MREV2 for best gains ($400) or... shameless plug... if you want less gains than the MREV2 but want to save some cash you can buy a lower plenum off a non revup motor (which I have for sale in the texas local for sale area)... again you only have to worry about this if you have the rev up engine...
also if you have a revup motor you will want to replace the lower plenum when you add the spacer or you won't get much gains. You can replace the lower with an MREV2 for best gains ($400) or... shameless plug... if you want less gains than the MREV2 but want to save some cash you can buy a lower plenum off a non revup motor (which I have for sale in the texas local for sale area
)... again you only have to worry about this if you have the rev up engine...I have a 05 Z Roadster. Which plenum and Cats/Test pipes should I go with? Would the car sound to raspy or ricey at all? I just heard test pipes really screw with the noise of the car, make it alot louder.
and does it sound good with stock exhaust?
I wouldn't do the Test pipes...they are way too loud and they will smell like Gas really bad....ask Jake also.
HFC's will be much better than Test Pipes....I think Jake has some on his Z now. The plenum spacer won't make any or no difference in sound IMO.
I think the two compliment each other, but you should also go with an exhaust eventually to get the most from intake....to exhaust.
HFC's will be much better than Test Pipes....I think Jake has some on his Z now. The plenum spacer won't make any or no difference in sound IMO.
I think the two compliment each other, but you should also go with an exhaust eventually to get the most from intake....to exhaust.
I wouldn't do the Test pipes...they are way too loud and they will smell like Gas really bad....ask Jake also.
HFC's will be much better than Test Pipes....I think Jake has some on his Z now. The plenum spacer won't make any or no difference in sound IMO.
I think the two compliment each other, but you should also go with an exhaust eventually to get the most from intake....to exhaust.
HFC's will be much better than Test Pipes....I think Jake has some on his Z now. The plenum spacer won't make any or no difference in sound IMO.
I think the two compliment each other, but you should also go with an exhaust eventually to get the most from intake....to exhaust.
if you have aftermarket exhuast (from y-pipe back) - go with Kinetix...Stock setup w/catback - BERKS (thats ONLY cause they were SUPER loud on my car - on Z-YA's it was PURRRFECTION!) . My single exhaust didnt help either.I had TP's on my car threw CEL's all over the place(even with the non foulers) - and STUNK to high heaven
Plenum - Motordyne ISOthermal - and stick with 5/16...anything bigger and you wont be able to put your strut bar back on.
This is just my opinion so anyone that has different setups - chime in...let us know..
Well than thats what I will do. I was getting a sweet deal on a TopSpeed exhaust for $350 thats why I asked
I have a 05 Z Roadster. Which plenum and Cats/Test pipes should I go with? Would the car sound to raspy or ricey at all? I just heard test pipes really screw with the noise of the car, make it alot louder.
and does it sound good with stock exhaust?
I have a 05 Z Roadster. Which plenum and Cats/Test pipes should I go with? Would the car sound to raspy or ricey at all? I just heard test pipes really screw with the noise of the car, make it alot louder.
and does it sound good with stock exhaust?
Last edited by hypeiv; Jan 29, 2010 at 10:45 AM.
Thread Starter
Joined: Jan 2006
Posts: 11,204
Likes: 32
From: San Antonio/I miss DFW, TX
test pipes would be the most free flowing, but the smell of performance comes with it...
hfc, exhaust, etc........all are gonna sound loud, raspy, etc, etc......
just gotta figure it out now on what you really want..
-J
03-05s have non-revup, unless it's the 35th Anniversary Edition 6MT or track with the rev-up. 06s have the revup engines.
Non-rev-up engines will respond best to both spacer and mrev2, then just spacer alone, then mrev2 alone. Rev-up engines will only show gains with mrev2. Adding spacer to a revup will make more power, but adding an unmodified stock plenum from a non-rev-up probably won't show any gains. It has to be modified first into a mrev2 first (by shaving down the top of the front 2 runners) before it will show gains on a rev-up.
Test pipes will yield the most gains, N/A or FI; it'll yield more gains than HFC. It'll be a bit louder, but how much louder depends on the brand of the pipes and your exhaust set-up. Honestly, there isn't that much of a difference in sound, but you'll probably notice a bit more rasp. However, rasp can be taken care of as long as you match the pipe sizes. From what I understand, rasp comes from turbulence within the piping due to mismatched sizes. I'm on my 5th pair of test pipes, btw, and broke the previous 4 and even had some of them rewelded a few times. I don't have issues with smelling fuel (unless I'm behind the car) and haven't had this problem. I also don't have rasp with my current exhaust (APS 2.5" TD with X-pipe) and didn't have rasp with my Fujitsubo Super Ti.
As far as the spacer goes, I believe you can go up to 3/8" spacer if you want to use your stock strut bar. I've done quite a few 5/16" spacer installs and there was always enough room between the strut bar and the plenum on all the Zs.
I also had the TopSpeed exhaust a few years back, too. It is one of the loudest exhaust for the Z/Gs and I highly recommend that you don't add HFCs or test pipes if you're planning on daily driving your car. The drone alone from an otherwise stock set-up gets bad enough. However, this exhaust will definitely give you top-end power (track tested by yours truly).
Lastly, the best bang for the buck mods for a non-rev-up would be test pipes, mrev2, or spacer (in no particular order as they all yield similar gains). Go with those and you should be set.
Non-rev-up engines will respond best to both spacer and mrev2, then just spacer alone, then mrev2 alone. Rev-up engines will only show gains with mrev2. Adding spacer to a revup will make more power, but adding an unmodified stock plenum from a non-rev-up probably won't show any gains. It has to be modified first into a mrev2 first (by shaving down the top of the front 2 runners) before it will show gains on a rev-up.
Test pipes will yield the most gains, N/A or FI; it'll yield more gains than HFC. It'll be a bit louder, but how much louder depends on the brand of the pipes and your exhaust set-up. Honestly, there isn't that much of a difference in sound, but you'll probably notice a bit more rasp. However, rasp can be taken care of as long as you match the pipe sizes. From what I understand, rasp comes from turbulence within the piping due to mismatched sizes. I'm on my 5th pair of test pipes, btw, and broke the previous 4 and even had some of them rewelded a few times. I don't have issues with smelling fuel (unless I'm behind the car) and haven't had this problem. I also don't have rasp with my current exhaust (APS 2.5" TD with X-pipe) and didn't have rasp with my Fujitsubo Super Ti.
As far as the spacer goes, I believe you can go up to 3/8" spacer if you want to use your stock strut bar. I've done quite a few 5/16" spacer installs and there was always enough room between the strut bar and the plenum on all the Zs.
I also had the TopSpeed exhaust a few years back, too. It is one of the loudest exhaust for the Z/Gs and I highly recommend that you don't add HFCs or test pipes if you're planning on daily driving your car. The drone alone from an otherwise stock set-up gets bad enough. However, this exhaust will definitely give you top-end power (track tested by yours truly).
Lastly, the best bang for the buck mods for a non-rev-up would be test pipes, mrev2, or spacer (in no particular order as they all yield similar gains). Go with those and you should be set.
Just the name of the game..
Last edited by AcidJake75; Jan 29, 2010 at 11:32 AM.
Thread Starter
Joined: Jan 2006
Posts: 11,204
Likes: 32
From: San Antonio/I miss DFW, TX
"Why dont you like dual exhaust"
lmao @ Jake. Did you really tell her that?
I guess so getting some High Flow Cats and the plenum. Ill just leave the test pipes out of it for now than. Also I am a bit of a n00b what is the mrev2? Just outta curiousity
and do pullies make that much of a difference? My buddy has a 04 with intake, exhaust, and pullies and he swears up and down since the pullies his car feels quicker. And doesn't help that he always kills me lol, not that we race or anything lol
I guess so getting some High Flow Cats and the plenum. Ill just leave the test pipes out of it for now than. Also I am a bit of a n00b what is the mrev2? Just outta curiousity
and do pullies make that much of a difference? My buddy has a 04 with intake, exhaust, and pullies and he swears up and down since the pullies his car feels quicker. And doesn't help that he always kills me lol, not that we race or anything lol
From what I have read... no... and even if they make a little gain, for $215+ they are not the most cost effective way to make power. I wouldn't worry about about them until you have your exhaust and plenum all set.
Last edited by hypeiv; Jan 29, 2010 at 02:17 PM.
https://my350z.com/forum/5341039-post8.html
http://g35driver.com/forums/g-spot/3...-manifold.html
Without the spacer your max HP might suffer but according to the engineers at at motordyne you can get gains with the spacer and stock-non-rev-up lower plenum and spacer, which would be greater than running the spacer alone on a rev-up engine
Last edited by hypeiv; Jan 29, 2010 at 04:21 PM.