NWP 75 mm throttle body installed, first thoughts
07-29-2013, 02:24 PM
#43
They dont make a sprint booster for the 6th gen maxima. I have a 96 max and a 05 max.
07-29-2013, 03:08 PM
#44
"Ban them?" HAHAHAHA, wow man, that is a ridiculous statement.
Based on your posts, I'd imagine you guys have slowed down on the ol' site because your nap times and Matlock reruns get in the way.
I get what you're saying there Mrinternetzpolice, but seriously. Are you gonna run around every thread making sure everyone is in perfect cooperation with the sites rules and regs? Okay Hot Fuzz.
Who are you again? Oh, you're a guy that has 1300 posts and has been here longer. OOOOOOOHHHHHHHH, you better police all the newer people on here. Don't you think that the mods know how to ya know, MOD? Go take your Geritol and blood pressure medicine now, because we all know policing the "netz punks" is stressful proposition.
Based on your posts, I'd imagine you guys have slowed down on the ol' site because your nap times and Matlock reruns get in the way.
I get what you're saying there Mrinternetzpolice, but seriously. Are you gonna run around every thread making sure everyone is in perfect cooperation with the sites rules and regs? Okay Hot Fuzz.
Who are you again? Oh, you're a guy that has 1300 posts and has been here longer. OOOOOOOHHHHHHHH, you better police all the newer people on here. Don't you think that the mods know how to ya know, MOD? Go take your Geritol and blood pressure medicine now, because we all know policing the "netz punks" is stressful proposition.
07-29-2013, 03:50 PM
#48
Senior Member
Join Date: Dec 2005
Posts: 1,215
When you test for intake restriction you see what atmo is for example: 98kpa
Then you hook up a gauge to the manifold and if it's like 90kpa you have a big restriction.
Take the air box off and see if it goes higher.. If not, then the box isn't a restriction.
Get a BBTB and see how that does ect.
Allot of cars come with a non restrictive throttle body unless it's modified like cams/headers/tune.
I have a 90 bmw that I tested and the throttle body is slightly
restrictive, but it's boosted now so it doesn't matter.
Then you hook up a gauge to the manifold and if it's like 90kpa you have a big restriction.
Take the air box off and see if it goes higher.. If not, then the box isn't a restriction.
Get a BBTB and see how that does ect.
Allot of cars come with a non restrictive throttle body unless it's modified like cams/headers/tune.
I have a 90 bmw that I tested and the throttle body is slightly
restrictive, but it's boosted now so it doesn't matter.
07-29-2013, 11:21 PM
#49
07-30-2013, 10:43 AM
#51
It would be great to see what the intake restrictions are. Im betting the elbow is the most restrictive after you have a bigger throttle body. Seeing as you go right back to the 70mm...
07-30-2013, 01:04 PM
#52
IIRC the stock bore on the elbow is 72mm, so you only need to open it 1.5mm all around.
I did it easily with a drill and flapper wheel.
http://forums.maxima.org/all-motor/6...ter-plate.html
I did it easily with a drill and flapper wheel.
http://forums.maxima.org/all-motor/6...ter-plate.html
07-30-2013, 02:20 PM
#53
IIRC the stock bore on the elbow is 72mm, so you only need to open it 1.5mm all around.
I did it easily with a drill and flapper wheel.
http://forums.maxima.org/all-motor/6...ter-plate.html
I did it easily with a drill and flapper wheel.
http://forums.maxima.org/all-motor/6...ter-plate.html
07-30-2013, 03:08 PM
#55
Anyone done this mod with a large bore MAF as of yet? I'm interested in doing this, but at it stands, I'm just doing the Stillen popcharger with a stock maf and piping/with resonator. It seems to me that it would be a little counter intuitive to use the stock MAF size with this sort of mod. I would probably want to do the full monty for this mod.
S
S
07-30-2013, 05:34 PM
#58
Anyone done this mod with a large bore MAF as of yet? I'm interested in doing this, but at it stands, I'm just doing the Stillen popcharger with a stock maf and piping/with resonator. It seems to me that it would be a little counter intuitive to use the stock MAF size with this sort of mod. I would probably want to do the full monty for this mod.
S
S
And tuning will be required if a larger than stock Maf is used.
07-30-2013, 09:19 PM
#59
Junior Member
Join Date: Mar 2011
Posts: 30
might be dumb question but I don't follow. what will a sprint signal booster do for throttle response?
07-30-2013, 10:41 PM
#61
Member
Thread Starter
Join Date: Apr 2005
Posts: 196
Did some daily driving on highway to work and noticed mpg goes down
Just wanted to let you all know on the highway the throttle body is peppy. I can see cars disappear more in rear view then ever before.
The downside I notice is I need to be a lot more conservative on the gas. If I hover around 72 at 3000-3100 rpms I get around 24.0 mpg in 4th on my auto.
If I dig into the throttle I have seen it dip to 22.6 mpg. I see the MPG moving more frequently now. I think tuning my car with the turbo xs utec should help resolve some issues. I also know light to light cruising and idle my mpg seems worse. Anyone else have this problem?
The downside I notice is I need to be a lot more conservative on the gas. If I hover around 72 at 3000-3100 rpms I get around 24.0 mpg in 4th on my auto.
If I dig into the throttle I have seen it dip to 22.6 mpg. I see the MPG moving more frequently now. I think tuning my car with the turbo xs utec should help resolve some issues. I also know light to light cruising and idle my mpg seems worse. Anyone else have this problem?
07-30-2013, 10:44 PM
#62
Member
Thread Starter
Join Date: Apr 2005
Posts: 196
http://www.kbb.com/nissan/maxima/2002-nissan-maxima/
Apparently 24 mpg is the norm I guess. I have gotten to 24.5 at best. I also know that I need air in my tires. This might bump it back. It has been hot here. Let me try that and see what it does. I just never noticed a huge jump in mpg pegging it until now. Maybe that means its working LOL.
Apparently 24 mpg is the norm I guess. I have gotten to 24.5 at best. I also know that I need air in my tires. This might bump it back. It has been hot here. Let me try that and see what it does. I just never noticed a huge jump in mpg pegging it until now. Maybe that means its working LOL.
07-31-2013, 04:15 AM
#63
http://www.kbb.com/nissan/maxima/2002-nissan-maxima/
Apparently 24 mpg is the norm I guess. I have gotten to 24.5 at best. I also know that I need air in my tires. This might bump it back. It has been hot here. Let me try that and see what it does. I just never noticed a huge jump in mpg pegging it until now. Maybe that means its working LOL.
Apparently 24 mpg is the norm I guess. I have gotten to 24.5 at best. I also know that I need air in my tires. This might bump it back. It has been hot here. Let me try that and see what it does. I just never noticed a huge jump in mpg pegging it until now. Maybe that means its working LOL.
07-31-2013, 06:48 AM
#64
Just wanted to let you all know on the highway the throttle body is peppy. I can see cars disappear more in rear view then ever before.
The downside I notice is I need to be a lot more conservative on the gas. If I hover around 72 at 3000-3100 rpms I get around 24.0 mpg in 4th on my auto.
If I dig into the throttle I have seen it dip to 22.6 mpg. I see the MPG moving more frequently now. I think tuning my car with the turbo xs utec should help resolve some issues. I also know light to light cruising and idle my mpg seems worse. Anyone else have this problem?
The downside I notice is I need to be a lot more conservative on the gas. If I hover around 72 at 3000-3100 rpms I get around 24.0 mpg in 4th on my auto.
If I dig into the throttle I have seen it dip to 22.6 mpg. I see the MPG moving more frequently now. I think tuning my car with the turbo xs utec should help resolve some issues. I also know light to light cruising and idle my mpg seems worse. Anyone else have this problem?
At 72 mph I'm only turning about 2600 - 2700 rpms.
07-31-2013, 07:33 AM
#65
Supporting Maxima.org Member
Join Date: Sep 2000
Posts: 2,038
07-31-2013, 08:39 AM
#66
Let me get my Pathfinder squared away and I plan on dynoing this with my set-up, before and after the TB and also giving that Sparks IM another chance.
Stay tuned. (no pun intended)
And again, with Maximas all logic is essentially tossed out the door as I've said before. 3" exhaust, 4" intakes, 440cc (very big) injectors for NA, all of which had anyone said anything about these mods 8-10 years ago would have been tossed to the wolves because logic does not support the theory. But we found it, they work.
Stay tuned. (no pun intended)
And again, with Maximas all logic is essentially tossed out the door as I've said before. 3" exhaust, 4" intakes, 440cc (very big) injectors for NA, all of which had anyone said anything about these mods 8-10 years ago would have been tossed to the wolves because logic does not support the theory. But we found it, they work.
07-31-2013, 10:01 AM
#67
Let me get my Pathfinder squared away and I plan on dynoing this with my set-up, before and after the TB and also giving that Sparks IM another chance.
Stay tuned. (no pun intended)
And again, with Maximas all logic is essentially tossed out the door as I've said before. 3" exhaust, 4" intakes, 440cc (very big) injectors for NA, all of which had anyone said anything about these mods 8-10 years ago would have been tossed to the wolves because logic does not support the theory. But we found it, they work.
Stay tuned. (no pun intended)
And again, with Maximas all logic is essentially tossed out the door as I've said before. 3" exhaust, 4" intakes, 440cc (very big) injectors for NA, all of which had anyone said anything about these mods 8-10 years ago would have been tossed to the wolves because logic does not support the theory. But we found it, they work.
how big is the RR MAF
07-31-2013, 10:44 AM
#69
In my expereince, and as what I said earlier regarding logic, I believe true CAI's are overated. I've done many many IAT logs, and it really only comes into play when in stop and go traffic, a palce where you really don't need/want an intake anyhow. My IAT's on the highway (45+MPH), and moderate (30MPH) speed cruising are typically ambient ± 3ºC.
Our worst enemy is the aluminum getting heat soaked, and there's very little we can do about that.
I am willing to bet any car properly set-up with a 3" or larger MAF and associated tubing would outperform a car set-up properly with a PRCAI.
But to asnwer your question, considering how young this mod is, and how rare a truae CAI is these days, I'd bet the asnwer is no.
Originally Posted by Leroni35
is your intake 4" how big is the RR MAF
07-31-2013, 12:54 PM
#71
Yeah, happened so often I got medieval with it and used a screw in there acting as a pin.
07-31-2013, 01:30 PM
#72
07-31-2013, 05:00 PM
#73
I just grabbed an elbow from the salvage yard and the opening was 73mm, so i did some fancy grinding, took out some of the shelf, and got it to 74mm. Going to 75 would be a ton of grinding to make it worthwhile. It can be done though. I just hate grinding aluminum because it clogs up carbide burrs, and stones.
I will be mating my BBTB with an 80mm ID BBMAF and velocity stack. Dyno tune will follow in a few weeks. I will also be cermaic coating the elbow and upper IM, the lower is already done.
I will be mating my BBTB with an 80mm ID BBMAF and velocity stack. Dyno tune will follow in a few weeks. I will also be cermaic coating the elbow and upper IM, the lower is already done.
08-01-2013, 06:15 AM
#74
I just grabbed an elbow from the salvage yard and the opening was 73mm, so i did some fancy grinding, took out some of the shelf, and got it to 74mm. Going to 75 would be a ton of grinding to make it worthwhile. It can be done though. I just hate grinding aluminum because it clogs up carbide burrs, and stones.
I will be mating my BBTB with an 80mm ID BBMAF and velocity stack. Dyno tune will follow in a few weeks. I will also be cermaic coating the elbow and upper IM, the lower is already done.
I will be mating my BBTB with an 80mm ID BBMAF and velocity stack. Dyno tune will follow in a few weeks. I will also be cermaic coating the elbow and upper IM, the lower is already done.
I am doing the same, grinding the elbow. No point having it go small again after the TB.
08-02-2013, 07:16 AM
#76
Member
Thread Starter
Join Date: Apr 2005
Posts: 196
More air = more gas. Welcome to the wonderful world of mods! I get about 20-21mpg in my turbo 3.5L Maxima. You can try to tune it out, but usually a tune will get you more power....= more fuel. You can tune light cruising to run around 15.0-15.1 ish to save gas, but when you accelerating the tune will be to get that power....so you will need more fuel.
I also know for a fact when you start making cars suck in a lot more air a catch can and or breather filter is needed on the valve cover or you burn oil in your intake tract from the valve cover. I had a similar issue on my Celica. I also noticed after the breather filter it eliminated the oil smell id get after a hard run on the Maxima. I recommend a breather filter to anyone who is modding heavily. It will save on oil consumption and your mileage will go up due to less oil being burnt during combustion.
08-02-2013, 07:59 AM
#77
I actually got my mileage back up to 24.8 mpg! What I ended up doing was filling tires to 40 psi, alignment, and a crankcase breather filter. The nipple coming off my intake pipe was a restriction. The air in tires upped it to high 23 mark but the crankcase filter helped get me in the high 24 range!!
08-02-2013, 08:08 AM
#78
yeah, mods dont cause bad gas mileage, if anything in general they will lead to better mileage because they facilitate a more efficient burn. Your car only needs x amount of power to go y speed and engine modifications dont change that. Its keeping your foot out of the go pedal once its modified that is the trick.
08-02-2013, 08:53 AM
#79
I actually got my mileage back up to 24.8 mpg! What I ended up doing was filling tires to 40 psi, alignment, and a crankcase breather filter. The nipple coming off my intake pipe was a restriction. The air in tires upped it to high 23 mark but the crankcase filter helped get me in the high 24 range!!
I also know for a fact when you start making cars suck in a lot more air a catch can and or breather filter is needed on the valve cover or you burn oil in your intake tract from the valve cover. I had a similar issue on my Celica. I also noticed after the breather filter it eliminated the oil smell id get after a hard run on the Maxima. I recommend a breather filter to anyone who is modding heavily. It will save on oil consumption and your mileage will go up due to less oil being burnt during combustion.
I also know for a fact when you start making cars suck in a lot more air a catch can and or breather filter is needed on the valve cover or you burn oil in your intake tract from the valve cover. I had a similar issue on my Celica. I also noticed after the breather filter it eliminated the oil smell id get after a hard run on the Maxima. I recommend a breather filter to anyone who is modding heavily. It will save on oil consumption and your mileage will go up due to less oil being burnt during combustion.
yeah, mods dont cause bad gas mileage, if anything in general they will lead to better mileage because they facilitate a more efficient burn. Your car only needs x amount of power to go y speed and engine modifications dont change that. Its keeping your foot out of the go pedal once its modified that is the trick.
08-02-2013, 08:54 AM
#80
I actually got my mileage back up to 24.8 mpg! What I ended up doing was filling tires to 40 psi, alignment, and a crankcase breather filter. The nipple coming off my intake pipe was a restriction. The air in tires upped it to high 23 mark but the crankcase filter helped get me in the high 24 range!!
I also know for a fact when you start making cars suck in a lot more air a catch can and or breather filter is needed on the valve cover or you burn oil in your intake tract from the valve cover. I had a similar issue on my Celica. I also noticed after the breather filter it eliminated the oil smell id get after a hard run on the Maxima. I recommend a breather filter to anyone who is modding heavily. It will save on oil consumption and your mileage will go up due to less oil being burnt during combustion.