First SSIM in a 6th gen
Newbie just Registered
Joined: May 2005
Posts: 2,795
From: LA/OC, CA
Went out for a drive and here's some more feedback:
-I can definitely feel roughness in air flow around 3,500-high 4,000's...most likely due to the lack of smoothing the runners out?
-Low end has a noticeable lag to some extent...nothing horrible, but noticeable
-A few runs from 3rd gear from about 60mph at 3,500-6,500...lags a little and then picks up around 4,500...few times it felt like VTEC mode y0
-Gas mileage seems to be about the same if not slightly better...I know the carputer isn't accurate, but the miles that I have driven compared with the miles I have left are slightly more than before...and I've been womping on it quite a few times.
Overall I am happy with the mod so far considering it didn't cost an arm and a leg like the Kinetix, but I know that there is room for some improvement if I were to smooth everything out in the IM.
I'm sure that the ECU still has some adapting to do since I only put <100 miles on it.
-I can definitely feel roughness in air flow around 3,500-high 4,000's...most likely due to the lack of smoothing the runners out?
-Low end has a noticeable lag to some extent...nothing horrible, but noticeable
-A few runs from 3rd gear from about 60mph at 3,500-6,500...lags a little and then picks up around 4,500...few times it felt like VTEC mode y0
-Gas mileage seems to be about the same if not slightly better...I know the carputer isn't accurate, but the miles that I have driven compared with the miles I have left are slightly more than before...and I've been womping on it quite a few times.
Overall I am happy with the mod so far considering it didn't cost an arm and a leg like the Kinetix, but I know that there is room for some improvement if I were to smooth everything out in the IM.
I'm sure that the ECU still has some adapting to do since I only put <100 miles on it.
That's the second or third time I made that mistake...sew me...I mean sue me...
I know dis'...
If you cruise at 3,000 then you're cruising, so no power is needed...
kurwa, otwusz swoje oczy!
http://forums.maxima.org/showpost.ph...9&postcount=34
The ***** is good and my MPG has been close to the same, so I'm not complaining about that...I'm just going to take the thing off and smooth out the inside of it and add the coolant bypass valve that I should have put on a while ago...
kurwa, otwusz swoje oczy!
http://forums.maxima.org/showpost.ph...9&postcount=34
The ***** is good and my MPG has been close to the same, so I'm not complaining about that...I'm just going to take the thing off and smooth out the inside of it and add the coolant bypass valve that I should have put on a while ago...
There are a few side issues with that.
A) the hot shot set i have have the cat damaged during removal from last maxima. needs fixing $$$
B) they will throw a CEL because the moron who designed them put the primary o2 bung in 1 collector instead of at the bottom of the 3-1 where it should read all 3 cylinders. Need to relocate the bung $.
C) same for the rear header. $$
D) need to have a splitter bracket welded in on the new cat that splits exhaust flow to two seperate O2 sensor, the hot shot design has two secondary sensors side by side that read exhaust flow from 6 cylinders instead of 3. $$$
(STOCK: prim o2 reads 3 then cat then post reads 3.)
(HS: prim o2 reads 1 then cat then post reads 6.) CONFIRMED fixable my nissan senior tech that replaced my engine, he said he wouldnt install the POS HS headers I had cause they need a lot of work before he would slap them on a brand new engine. LOT OF WORK = LOTS OF $$$
E) going to cuba for 8 days to relax with the GF for our 5 years anniversary $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$
F) 8h to install them..... thats a little mental.
G) SSIM = free, dyno = $65. TSQ = $$$ but still cheaper then Headers.
Kamski
A) the hot shot set i have have the cat damaged during removal from last maxima. needs fixing $$$
B) they will throw a CEL because the moron who designed them put the primary o2 bung in 1 collector instead of at the bottom of the 3-1 where it should read all 3 cylinders. Need to relocate the bung $.
C) same for the rear header. $$
D) need to have a splitter bracket welded in on the new cat that splits exhaust flow to two seperate O2 sensor, the hot shot design has two secondary sensors side by side that read exhaust flow from 6 cylinders instead of 3. $$$
(STOCK: prim o2 reads 3 then cat then post reads 3.)
(HS: prim o2 reads 1 then cat then post reads 6.) CONFIRMED fixable my nissan senior tech that replaced my engine, he said he wouldnt install the POS HS headers I had cause they need a lot of work before he would slap them on a brand new engine. LOT OF WORK = LOTS OF $$$
E) going to cuba for 8 days to relax with the GF for our 5 years anniversary $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$
F) 8h to install them..... thats a little mental.
G) SSIM = free, dyno = $65. TSQ = $$$ but still cheaper then Headers.
Kamski
. It has yet to be determined that they will fit or not. And considering that you aren't going to tackle this yourself, I wouldn't think a shop would be too easy on you as far as prices go. Couple that with the fact that you will need to get an EGR bung welded in since 5.5 gens do not have external EGR, like the 6th gen does, so in your opinion, even more $$. But, it can be bittersweet, as if they did come from a 5.5 gen, they will sell that much faster. Depends on who you are.
Considering the nit picking you're doing for every $, I would think that a dyno + TSECU would bother you, and in the end, you'll gain FAR more with the headers.
BTW, have fun on your trip.
haha this is a fun thread to read. so you have a cel?
bungs cost almost nothing to move as nmexmax said.
and about your dyno...which GEAR did you dyno in? and what it it's ratio?
the reason you have an SES light on afaik is whomever did you ssim f'ed up. one of the cylinders is getting improper air flow. others have had this problem too. unfortunately your going to be driving around with a ses light for as long as you have it...
sell me your 5th gen headers.
bungs cost almost nothing to move as nmexmax said.
and about your dyno...which GEAR did you dyno in? and what it it's ratio?
the reason you have an SES light on afaik is whomever did you ssim f'ed up. one of the cylinders is getting improper air flow. others have had this problem too. unfortunately your going to be driving around with a ses light for as long as you have it...
sell me your 5th gen headers.
Last edited by Torgus; Apr 30, 2008 at 03:27 PM.
1.) He got rid of his SES. it was because he had not performed the throttle closed position reset . IAVL.
2.) I've been studying the A34 dyno situation for years now. It seems as if 4th gear dynos are ideal because 3th gear seems to have a 'blip' dues to TQCNVTR lock-up. I've discussed it many times with a few members, and if A34 members want to get rid of the blip, it needs to be done in 4th gear. in the case of the A34, ratio is not important because the FD of the 5AT is semi 'short' but the gear ratios are tall to make up for this. So, the closest gear ratio the 5AT set is 5th, and Jesus, we wouldn't want anyone dynoing in 5th.
3.) There was only 1 isolated case of 'ssim' + SES, and it was, IMO, improper install. that member did not pursue the SES much, and just got rid of it. but as stated priorly, the OP of THIS thread has since gotten rid of his SES.
4.) After further though and logic. It has come to me that kamski's headers may not be from a 5.5 gen. The only reason I state this is because kamski mentioned the cat was fubar'd. And 5.5 gen HS header sets do not come w/ a cat already in place, only 6th gen Maximas and 3,5L Altimas do.
2.) I've been studying the A34 dyno situation for years now. It seems as if 4th gear dynos are ideal because 3th gear seems to have a 'blip' dues to TQCNVTR lock-up. I've discussed it many times with a few members, and if A34 members want to get rid of the blip, it needs to be done in 4th gear. in the case of the A34, ratio is not important because the FD of the 5AT is semi 'short' but the gear ratios are tall to make up for this. So, the closest gear ratio the 5AT set is 5th, and Jesus, we wouldn't want anyone dynoing in 5th.
3.) There was only 1 isolated case of 'ssim' + SES, and it was, IMO, improper install. that member did not pursue the SES much, and just got rid of it. but as stated priorly, the OP of THIS thread has since gotten rid of his SES.
4.) After further though and logic. It has come to me that kamski's headers may not be from a 5.5 gen. The only reason I state this is because kamski mentioned the cat was fubar'd. And 5.5 gen HS header sets do not come w/ a cat already in place, only 6th gen Maximas and 3,5L Altimas do.
1.) He got rid of his SES. it was because he had not performed the throttle closed position reset . IAVL.
2.) I've been studying the A34 dyno situation for years now. It seems as if 4th gear dynos are ideal because 3th gear seems to have a 'blip' dues to TQCNVTR lock-up. I've discussed it many times with a few members, and if A34 members want to get rid of the blip, it needs to be done in 4th gear. in the case of the A34, ratio is not important because the FD of the 5AT is semi 'short' but the gear ratios are tall to make up for this. So, the closest gear ratio the 5AT set is 5th, and Jesus, we wouldn't want anyone dynoing in 5th.
3.) There was only 1 isolated case of 'ssim' + SES, and it was, IMO, improper install. that member did not pursue the SES much, and just got rid of it. but as stated priorly, the OP of THIS thread has since gotten rid of his SES.
4.) After further though and logic. It has come to me that kamski's headers may not be from a 5.5 gen. The only reason I state this is because kamski mentioned the cat was fubar'd. And 5.5 gen HS header sets do not come w/ a cat already in place, only 6th gen Maximas and 3,5L Altimas do.
2.) I've been studying the A34 dyno situation for years now. It seems as if 4th gear dynos are ideal because 3th gear seems to have a 'blip' dues to TQCNVTR lock-up. I've discussed it many times with a few members, and if A34 members want to get rid of the blip, it needs to be done in 4th gear. in the case of the A34, ratio is not important because the FD of the 5AT is semi 'short' but the gear ratios are tall to make up for this. So, the closest gear ratio the 5AT set is 5th, and Jesus, we wouldn't want anyone dynoing in 5th.
3.) There was only 1 isolated case of 'ssim' + SES, and it was, IMO, improper install. that member did not pursue the SES much, and just got rid of it. but as stated priorly, the OP of THIS thread has since gotten rid of his SES.
4.) After further though and logic. It has come to me that kamski's headers may not be from a 5.5 gen. The only reason I state this is because kamski mentioned the cat was fubar'd. And 5.5 gen HS header sets do not come w/ a cat already in place, only 6th gen Maximas and 3,5L Altimas do.
Yes the HS headers i got are from a 6th gen, he trader his in for some form of a Lexus or another. BAH toyota!!!
Anywhoo, from what the origional buyer told me, the EGR got mangled during the install :S shop fixed it for him NC. Then during removal going back to stock they dropped the y-pipe and damaged the cat. WHICH TOTALY sucks cause i got quoted $200 on the cat repair, plus i spent $500 on them, plus $500-600 to install, plus $100 for all the bung relocations.
FAK!!! Anyone want a set of HS headers for cheap? :-(
I cant swing the HS install plus the TSQ re-flash all at once.
Kamski
This mod does "hurt" low end a little, but I haven't noticed it much.
How did you measure the 10-15% better flow?
The runners were supposed to be polished up quite nicely by the guy that did it, but ummm...as you can see, he didn't!
Either way, I know that there was a noticeable power gain, so me happy
How did you measure the 10-15% better flow?
The runners were supposed to be polished up quite nicely by the guy that did it, but ummm...as you can see, he didn't!
Either way, I know that there was a noticeable power gain, so me happy
Sorta like this one:
On a plus side I got most of the stuff put back together. Now i could prolly do this mod all on my own in an hour and a half easy. This sucks, more waiting for TSQ re-flash :-(
Q? the 350z motor has variable valve timing on both intake and exhaust. Do our cars? OT i know but reading about 350z motors on ebay and this got me curious.
Kamski
Last edited by kamski; May 2, 2008 at 09:57 AM.
After running a tank of gas, my gas mileage is pretty much right on where it used to be...20.5 and that's using the real way of dividing the miles by gallons.
There were multiple 100mph+ runs with this tank as well, so it didn't eat up as much as gas as expected.
There were multiple 100mph+ runs with this tank as well, so it didn't eat up as much as gas as expected.
Yes sir, once my b-pipe and y-pipe get shipped back. I sent out my y-pipe to get the flex-pipes swapped with "normal" ones that don't hiss while revving down. The b-pipe is on back-order and hopefully it will be stocked early June, so I will get both of them early-mid June and dyno accordingly.
Senior Member
Joined: Oct 2011
Posts: 1,245
Oh okay. I have a dremel and a grinder so i'll see what I can do with both. Is there anything I should know before this mod? Any codes? Problems that might occur? Anything that might affect my car or motor?
I've never done this but i'm no novice when it comes to experimenting on my own car. The pics provided in this thread is very helpful.
I've never done this but i'm no novice when it comes to experimenting on my own car. The pics provided in this thread is very helpful.
