SRI Aggrevation!!
07-09-2011, 10:11 AM
#1
SRI Aggrevation!!
So I'm having some SRI trouble. I've chosen the SRI but I'm getting extremely aggravated with the information I'm being given in regards to dyno tuning. Research shows that it's necessary to dyno but I've stumbled upon other info that states that it's not so necessary. I've gone the extra mile of personally asking people who build monster engines (non of which included a maxima drag car) what they believed based on experience and I've recieved the same responses from those people regarding the dyno. So this leads me here, my last resort, to my fellow .org members. Our engines are most definitley different from all others! Does anyone have any information regarding this? Im not trying to build a monster machine. Just something thats faster than the average Maxima. I also am NOT trying to run lean or rich. HELP!!
07-09-2011, 11:11 AM
#5
I was thinking about it but $300+ for a dyno for just an SRI is a bit much to me. If I were to do a dyno I would definitely get an ECU and headers along with the SRI. I was thinking about just getting the SRI and just dyno if I run rich or lean. I do understand that in order to get the most out of any in take then a tune it but I'm just not opting to do that just yet, unless I have to.
07-09-2011, 11:15 AM
#6
on the way and I have to scrape my project money together, providing that it doesn't affect my family in any way.
07-09-2011, 12:01 PM
#8
Not saying the other information wasn't useful, just that you guys helped me greatly with what I needed.
07-09-2011, 12:23 PM
#9
As far as the intake goes, just throw it on and call it a day. You will feel a slight gain in HP but your a/f will not change drastically enough to cause an unsafe situation.
07-09-2011, 12:31 PM
#10
#2 Happy to know my A/F will NOT be affected greatly
#3 Thanks man I'm so excited I can't wait for my child, dont know what I'm having just yet but that's ok
and BTW congrats to you as well, I'm sure you and your family will go far together 
07-09-2011, 12:52 PM
#11
No point going to a dyno with just an intake. You don't have a piggyback installed to tune it anyway. You need something to override the main ECU so you wouldn't be able to accomplish anything at a dyno. You could spend 60-80 bucks and get a baseline dyno to see what you are putting down at the wheels if you;re curious but don't expect them to add any horsepower for you
07-09-2011, 01:22 PM
#12
Agreed. It's just a SRI on a Maxima. Nothing to get all worked up about. Very minor gains, if any at all.
Lots of howl at WOT, however. Which is kind of fun the first time you experience it.
Lots of howl at WOT, however. Which is kind of fun the first time you experience it.
07-09-2011, 04:59 PM
#14
No point going to a dyno with just an intake. You don't have a piggyback installed to tune it anyway. You need something to override the main ECU so you wouldn't be able to accomplish anything at a dyno. You could spend 60-80 bucks and get a baseline dyno to see what you are putting down at the wheels if you;re curious but don't expect them to add any horsepower for you
Added info >> Oh and BTW I called Universal Nissan and I was told by one of their representatives that ECU A/F tuning is available.. how true this is I don't know.. this was about 5 months ago when I was doing research on cheap tuning
Last edited by UncleSmitty; 07-09-2011 at 05:05 PM.
07-10-2011, 11:37 AM
#15
My intake was setting off alarms at WOT
07-11-2011, 12:28 PM
#19
And I bet your puddle lights were causing highway lamps to shut off.OP, wide-open-throttle is a noise bonanza with a SRI. I personally get off on it (emotionally speaking). But who drives WOT every time they get in the car? Seriously.
07-11-2011, 12:34 PM
#20
Basic SRI won't change enough to require a dyno/tune. If you go into the depths of MAF/housing replacement and/or custom setups such as sparks03max, then yes, you will need to add the ability to tune and adjust the AFR, possibly more.
07-11-2011, 12:38 PM
#21
^^^ Listen to this guy he knowsss, his mechanic tells him everything while he works on his car.
07-11-2011, 12:43 PM
#22
07-11-2011, 12:47 PM
#23
Beat Seafoam hands down in numerous fictive, comparison tests. 
07-11-2011, 07:07 PM
#29
07-12-2011, 05:58 AM
#30
Member
Join Date: Jan 2011
Location: south fl.
Posts: 153
With regards to Sri or not to Sri, I agree with most on the forum. To run rich or lean is not the question, the answer is do the Sri and don't worry about tuning right away. Your Addition of an Sri won't change your baseline much, real world numbers say 5 to 8 hp nominal which you probably won't see anything at the wheels do to drive line loss. you'll just hear a meaner sound. You would deff. Need to change your maf since that is the sensor that give your air volume to the ecu. Tue ecu is what is going to tell your car what it needs to do. I.e retard timing or increase timing to meet the demand for more air volume hence a/f ratio. Or then again with a child on tue way which is awesome congrats, put your toy money away for baby. You never know when a rainy day may arrive
Last edited by infiniti medic; 07-12-2011 at 06:02 AM.
07-12-2011, 06:24 AM
#32
If a GAB gives 9whp, (proven by 3 of us) and I saw an increase of 23 with just an intake and base timing adjustment, I would definitely consider an intake as a strong start.
Last edited by NmexMAX; 07-12-2011 at 06:26 AM.
07-12-2011, 10:17 AM
#34
Member
Join Date: Mar 2011
Location: Cincy, OH
Posts: 92
Mine feels quite the opposite now. At low revs its loud, really loud, at times annoying. Between 2~5k it has an amazing howl that I love, above that I mainly hear wind noise.
Last edited by F35-JSF; 07-12-2011 at 10:28 AM.
07-12-2011, 12:13 PM
#35
Personally I run a hybrid SRI with the Helmholtz intact. Much quieter but it still has a nice punch.
07-12-2011, 12:15 PM
#36
That's a fair point right there. Keeping the resonator in the mix should quiet down the SRI. And there are a number of people who swear it improves the efficiency of the air flow.
07-12-2011, 12:30 PM
#37
The straight pipe gives a 5200 RPM camels hump.
These are my first dynos ever.
Helmholtz intact (higher hp represents GAB mod + headers):
straight pipe, same scenario as above:
Comparison:
Same day, no tune.
That session was to compare GAB + straight pipe vs Helmholtz. Seen it on other dynos too. This proves 2 things, the power delivery comparison, and that a GAB is worth some notable whp.
Last edited by NmexMAX; 07-12-2011 at 12:32 PM.
07-12-2011, 12:38 PM
#39
I feel the same. I used to like really quiet exhaust set-ups too.
I thought, I could go ahead and deal with the camel's hump. I improved on it slightly with a little AFR conditioning.
Last edited by NmexMAX; 07-12-2011 at 12:41 PM.
