Custom Intake Manifold and 87mm Throttle Body
09-27-2012, 09:38 PM
#43
10-17-2012, 08:36 PM
#51
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I don't plan on making these due to the fact that I don't want to be responsible if it doesnt fit or if it breaks or something. I will release the measurements when I get a chance (i know ive been slacking)
10-22-2012, 04:44 AM
#54
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I have a about $300-$400 into it total I would estimate though. I wasted some material and other parts but that's part of the learning process
11-03-2012, 01:01 PM
#58
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Stock TB. I have the 09 one just sitting in my garage though.
Well, I'm kind of pissed.
My highest run was 256hp @ 5350 rpm (269tq @4600 rpm).
The first run was only 232hp @ 5300 rpm (249tq @4500 rpm). Mind you there was NO tuning in between runs, so I have no idea why I picked up like 20whp between my first and second run.
Can someone please explain to me how I made more torque than horsepower?????? WTF
Also, power appears to REALLY drop off on the dyno after 5500 rpm. At 6250 rpm, I made about 150whp!
There is NO way my car is making that little power at 6250 rpm. It FEELS faster with this manifold than it ever did all motor and I would definitely notice if power dropped in half at redline...
It feels consistent all the way to limiter so I have no idea what is going on here.
I was running 92oct fuel and I normally run 93, so maybe that's it? I did a third gear pull on the way home and it had some knock after 6000 rpm so I am going to assume that either the dyno is straight up wrong or that I was knocking on the dyno due to low airflow (hood was shut).
Who knows. Guess my 3.5" intake, LRMAF, custom manifold, hotshot headers, 3" y-pipe, 3" catback, e-manage ultimate tuned Maxima makes less HP at red-line than a stock auto 4th gen Maxima...
Well, I'm kind of pissed.
My highest run was 256hp @ 5350 rpm (269tq @4600 rpm).
The first run was only 232hp @ 5300 rpm (249tq @4500 rpm). Mind you there was NO tuning in between runs, so I have no idea why I picked up like 20whp between my first and second run.
Can someone please explain to me how I made more torque than horsepower?????? WTF
Also, power appears to REALLY drop off on the dyno after 5500 rpm. At 6250 rpm, I made about 150whp!
There is NO way my car is making that little power at 6250 rpm. It FEELS faster with this manifold than it ever did all motor and I would definitely notice if power dropped in half at redline...
It feels consistent all the way to limiter so I have no idea what is going on here.
I was running 92oct fuel and I normally run 93, so maybe that's it? I did a third gear pull on the way home and it had some knock after 6000 rpm so I am going to assume that either the dyno is straight up wrong or that I was knocking on the dyno due to low airflow (hood was shut).
Who knows. Guess my 3.5" intake, LRMAF, custom manifold, hotshot headers, 3" y-pipe, 3" catback, e-manage ultimate tuned Maxima makes less HP at red-line than a stock auto 4th gen Maxima...
11-03-2012, 01:11 PM
#59
Originally Posted by Unklejoe
Stock TB. I have the 09 one just sitting in my garage though.
Well, I'm kind of pissed.
My highest run was 256hp @ 5350 rpm (269tq @4600 rpm).
The first run was only 232hp @ 5300 rpm (249tq @4500 rpm). Mind you there was NO tuning in between runs, so I have no idea why I picked up like 20whp between my first and second run.
Can someone please explain to me how I made more torque than horsepower?????? WTF
Also, power appears to REALLY drop off on the dyno after 5500 rpm. At 6250 rpm, I made about 150whp!
There is NO way my car is making that little power at 6250 rpm. It FEELS faster with this manifold than it ever did all motor and I would definitely notice if power dropped in half at redline...
It feels consistent all the way to limiter so I have no idea what is going on here.
I was running 92oct fuel and I normally run 93, so maybe that's it? I did a third gear pull on the way home and it had some knock after 6000 rpm so I am going to assume that either the dyno is straight up wrong or that I was knocking on the dyno due to low airflow (hood was shut).
Who knows. Guess my 3.5" intake, LRMAF, custom manifold, hotshot headers, 3" y-pipe, 3" catback, e-manage ultimate tuned Maxima makes less HP at red-line than a stock auto 4th gen Maxima...
Well, I'm kind of pissed.
My highest run was 256hp @ 5350 rpm (269tq @4600 rpm).
The first run was only 232hp @ 5300 rpm (249tq @4500 rpm). Mind you there was NO tuning in between runs, so I have no idea why I picked up like 20whp between my first and second run.
Can someone please explain to me how I made more torque than horsepower?????? WTF
Also, power appears to REALLY drop off on the dyno after 5500 rpm. At 6250 rpm, I made about 150whp!
There is NO way my car is making that little power at 6250 rpm. It FEELS faster with this manifold than it ever did all motor and I would definitely notice if power dropped in half at redline...
It feels consistent all the way to limiter so I have no idea what is going on here.
I was running 92oct fuel and I normally run 93, so maybe that's it? I did a third gear pull on the way home and it had some knock after 6000 rpm so I am going to assume that either the dyno is straight up wrong or that I was knocking on the dyno due to low airflow (hood was shut).
Who knows. Guess my 3.5" intake, LRMAF, custom manifold, hotshot headers, 3" y-pipe, 3" catback, e-manage ultimate tuned Maxima makes less HP at red-line than a stock auto 4th gen Maxima...
Sent from the batcave
11-03-2012, 02:09 PM
#61
Originally Posted by Unklejoe
Fuel trims are zeroed in if that's what you mean. The car is tuned and I have about 8,000 miles on the manifold so far.
13.7 AFR at limiter with 28.5 degrees of timing.
13.7 AFR at limiter with 28.5 degrees of timing.
Sent from the batcave
11-03-2012, 04:12 PM
#62
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yeah i mean if it made 255whp at 6000rpm i could believe it but i have a hard time believing it would just die off like that. i doubt i make more tq than hp
i went back and checked my tune and found a spot between 5800 and 6100 that only had 23 degrees so i fixed that. i plan on finding another dyno just to make sure. the emanage is tricky with timing.
but i did a test.......
i have the raw datalogs from when i had the ssim with 3" straight pipe. i found the length of time it took to go from 4000 to 6400rpm in 3rd gear.
i did the same for my current setup (new mani).
it took 430ms LESS time to go from 4000rpm to 6400rpm with the new mani than it did with the ssim. so this proves that it is at least the same if not faster than before. idk how significant 430ms is but the times are consistent with 3 different runs. (plus or minus 50ms)
i went back and checked my tune and found a spot between 5800 and 6100 that only had 23 degrees so i fixed that. i plan on finding another dyno just to make sure. the emanage is tricky with timing.
but i did a test.......
i have the raw datalogs from when i had the ssim with 3" straight pipe. i found the length of time it took to go from 4000 to 6400rpm in 3rd gear.
i did the same for my current setup (new mani).
it took 430ms LESS time to go from 4000rpm to 6400rpm with the new mani than it did with the ssim. so this proves that it is at least the same if not faster than before. idk how significant 430ms is but the times are consistent with 3 different runs. (plus or minus 50ms)
11-04-2012, 11:00 AM
#67
1. PSI Proformance: I think they charge like $60 for 3 pulls or something. (recommended because you can usually get an appointment for power pulls easily)
http://www.psiproformance.com/dyno.php
2. RT Tuning: I have no ide what they charge but I think they would be harder to get a hold of since they are very busy.
http://rttuning.com/services/dyno-tuning-2/
3. Complete Street Performance: I dont know anything about them but here is their website
http://www.completestreetperformance...dex.htm#Tuning
11-06-2012, 06:38 AM
#69
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Since then-Technosquare, uprev, and bullydog all said they tuned that out in their product offerings(flashes) and aided in achieving the big power gains over 5k. It's just a thought, but can you monitor the actual voltage going to the the throttle body from the ecu?
maybe the maxima is different tho
Last edited by Finchum; 11-06-2012 at 06:40 AM.
11-06-2012, 07:50 AM
#70
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ok i've always heard of nissan's drive by wire vehicles pulling back throttle opening as you close in on redline. Jimwolf first found it in earlier qr25de and vq35de motors and stated the TPS would read 100% but actual opening would drop to 80% in that upper rpm range.
Since then-Technosquare, uprev, and bullydog all said they tuned that out in their product offerings(flashes) and aided in achieving the big power gains over 5k. It's just a thought, but can you monitor the actual voltage going to the the throttle body from the ecu?
maybe the maxima is different tho
Since then-Technosquare, uprev, and bullydog all said they tuned that out in their product offerings(flashes) and aided in achieving the big power gains over 5k. It's just a thought, but can you monitor the actual voltage going to the the throttle body from the ecu?
maybe the maxima is different tho
The TPS is literally just a variable resistor (potentiometer) that is mechanically connected to the butterfly valve. If the valve moves, the TPS voltage changes.
I have also heard of the throttle closing but I can confirm that my throttle stays 100% open for the entire pull. I have noticed that the ECU gives larger bursts of throttle in lower gears sometimes, for example, you are rolling in 1st gear at 5mph then suddenly push the pedal to 50%.
Thu ecu shortly bursts the throttle to like 75% then slowly back down to 50%. But at WOT, it just straight up goes to 100%.
11-06-2012, 07:52 AM
#71
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Also, I reviewed my logs again and the MAF sensor input voltage's highest point is at limiter. Would this not mean I make the most HP at limiter (6600 rpm)?
I compared it to the stock MAF input voltage (from the stock mani) and the voltage hits a peak at around 5800rpm and stays flat.
I know air=hp.
I compared it to the stock MAF input voltage (from the stock mani) and the voltage hits a peak at around 5800rpm and stays flat.
I know air=hp.
11-06-2012, 03:17 PM
#72
I have my e-manage setup to use the actual 0-5v TPS for the throttle input.
The TPS is literally just a variable resistor (potentiometer) that is mechanically connected to the butterfly valve. If the valve moves, the TPS voltage changes.
I have also heard of the throttle closing but I can confirm that my throttle stays 100% open for the entire pull. I have noticed that the ECU gives larger bursts of throttle in lower gears sometimes, for example, you are rolling in 1st gear at 5mph then suddenly push the pedal to 50%.
Thu ecu shortly bursts the throttle to like 75% then slowly back down to 50%. But at WOT, it just straight up goes to 100%.
The TPS is literally just a variable resistor (potentiometer) that is mechanically connected to the butterfly valve. If the valve moves, the TPS voltage changes.
I have also heard of the throttle closing but I can confirm that my throttle stays 100% open for the entire pull. I have noticed that the ECU gives larger bursts of throttle in lower gears sometimes, for example, you are rolling in 1st gear at 5mph then suddenly push the pedal to 50%.
Thu ecu shortly bursts the throttle to like 75% then slowly back down to 50%. But at WOT, it just straight up goes to 100%.
Also, I reviewed my logs again and the MAF sensor input voltage's highest point is at limiter. Would this not mean I make the most HP at limiter (6600 rpm)?
I compared it to the stock MAF input voltage (from the stock mani) and the voltage hits a peak at around 5800rpm and stays flat.
I know air=hp.
I compared it to the stock MAF input voltage (from the stock mani) and the voltage hits a peak at around 5800rpm and stays flat.
I know air=hp.
Yeah there is a lot of myth about the TB closing at high RPM. Thats actually the newer Z's like revup that do that. 5.5 gen max does not do that at all.
Thats good you see peak maf at redline!
I thin your dyno is not right at all, its probably some part the dyno but you need to look at your logs and see if the ecu was pulling timing or something.
11-06-2012, 04:24 PM
#73
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Yeah there is a lot of myth about the TB closing at high RPM. Thats actually the newer Z's like revup that do that. 5.5 gen max does not do that at all.
Thats good you see peak maf at redline!
I thin your dyno is not right at all, its probably some part the dyno but you need to look at your logs and see if the ecu was pulling timing or something.
Thats good you see peak maf at redline!
I thin your dyno is not right at all, its probably some part the dyno but you need to look at your logs and see if the ecu was pulling timing or something.
Also, my knock sensor is deleted with the resistor...yolo
11-07-2012, 06:08 AM
#74
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I have my e-manage setup to use the actual 0-5v TPS for the throttle input.
The TPS is literally just a variable resistor (potentiometer) that is mechanically connected to the butterfly valve. If the valve moves, the TPS voltage changes.
I have also heard of the throttle closing but I can confirm that my throttle stays 100% open for the entire pull. I have noticed that the ECU gives larger bursts of throttle in lower gears sometimes, for example, you are rolling in 1st gear at 5mph then suddenly push the pedal to 50%.
Thu ecu shortly bursts the throttle to like 75% then slowly back down to 50%. But at WOT, it just straight up goes to 100%.
The TPS is literally just a variable resistor (potentiometer) that is mechanically connected to the butterfly valve. If the valve moves, the TPS voltage changes.
I have also heard of the throttle closing but I can confirm that my throttle stays 100% open for the entire pull. I have noticed that the ECU gives larger bursts of throttle in lower gears sometimes, for example, you are rolling in 1st gear at 5mph then suddenly push the pedal to 50%.
Thu ecu shortly bursts the throttle to like 75% then slowly back down to 50%. But at WOT, it just straight up goes to 100%.
I know my 07 g35 sport (vq35hr) supposedly had that crap. the technosquare reflash gave me 25whp in the upper rpms on the dynojet.
11-12-2012, 03:34 PM
#76
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I am going to dyno my car again and if it doesn't make at least 265whp I am probably going to re-design the manifold to make the elbow come in from the back with a velocity stack.
11-16-2012, 06:31 AM
#77
I've posted about it around the time that the Sparks IM thread turned semi-technical after all the shenanigans.
http://www.nissanclub.com/forums/rac...yesterday.html
Last edited by NmexMAX; 11-16-2012 at 06:35 AM.
11-16-2012, 10:26 PM
#78
IIRC, on the Altima forum, there's a feller on there that claims to have gained 15-20 just from going with 440's and a 4", tuned w/ a SAFCII w/ the 02 IM.
I've posted about it around the time that the Sparks IM thread turned semi-technical after all the shenanigans.
http://www.nissanclub.com/forums/rac...yesterday.html
I've posted about it around the time that the Sparks IM thread turned semi-technical after all the shenanigans.
http://www.nissanclub.com/forums/rac...yesterday.html
And Nice numbers Unklejoe, any idea when you hitting up that Dynojet.....
11-17-2012, 12:59 PM
#79
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dynoed the car on a dynojet today and made exactly the same hp....257 but the curve looked good. it stayed at 257 all the way til 6600. i lost the sheet somehow but it looked like sparks curve just 25hp lower on the top. i think the 3.5" elbow and maf/intake is a key component to making a manifold not die off past 6000. it did not die off at the top like a stock manifold would.
i will be cutting this manifold in half on friday and re-doing the entire design. i plan on having the pipe come in from the rear. i think the side entrance is causing turbulance. i made less than ranmas did with his stock manifold on the same dyno. i will also polish the runners
i will be cutting this manifold in half on friday and re-doing the entire design. i plan on having the pipe come in from the rear. i think the side entrance is causing turbulance. i made less than ranmas did with his stock manifold on the same dyno. i will also polish the runners
