GAB low-end concerns
08-12-2005, 02:03 PM
#1
GAB low-end concerns
Im thinking about performing the GAB modification but have concerns about potential low end power loss from the increased airflow. Can fellow .org-ers with the GAB mod chime in on this matter? Please keep in mind that I have an auto so power <2k rpm is crucial.
08-12-2005, 02:24 PM
#2
I did it on my 2K auto, lost the bottom end and gained a whole lotta noise... Removed it two days later after got beatten by a 4th gen of a dead stop (which I regularly beat without that)... The people on the org that dyno'ed it claim top end gains but I am not interested in that on expense of bottom end...
08-12-2005, 02:53 PM
#4
I have the ported airbox, with the hacked off top, and I actually gained my low end back after removing my Injen intake. I think this is the best intake mod if you want to keep your low end. If there is a minimal loss, I haven't experienced it. Plus if you get the rest of the exhaust mods, ie..y-pipe/headers, catback......trust me, you'll gain more than what you have.
08-12-2005, 03:29 PM
#5
if the rest of your plumbing is stock then low end will be lost with vitually any intake. it seems the gab causes less of a low end loss than other intakes.
in my experience i did lose some low end but not enough to make me want to go back to stock. i have no problem pulling hard from a stop and still have to be careful with the gas or roast the tires.
in my experience i did lose some low end but not enough to make me want to go back to stock. i have no problem pulling hard from a stop and still have to be careful with the gas or roast the tires.
08-12-2005, 04:36 PM
#6
Supporting Maxima.org Member
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Join Date: Nov 2004
Location: Baton Rouge, LA
Posts: 5,432
Originally Posted by BP
if the rest of your plumbing is stock then low end will be lost with vitually any intake. it seems the gab causes less of a low end loss than other intakes.
in my experience i did lose some low end but not enough to make me want to go back to stock. i have no problem pulling hard from a stop and still have to be careful with the gas or roast the tires.
in my experience i did lose some low end but not enough to make me want to go back to stock. i have no problem pulling hard from a stop and still have to be careful with the gas or roast the tires.
08-12-2005, 06:16 PM
#7
Originally Posted by maxilvr06
..the worst that can happen is that you wont like it, in which case you can go back to stock and you will have wasted a whopping 10 minutes of your life and a coat hanger...
08-12-2005, 06:16 PM
#8
Senior Member
Join Date: Apr 2003
Posts: 523
When I dynoed I found no low end loss. In fact I saw gains across the entire RPM range.
dyno >>>>>>>>>>> butt-dyno
http://forums.maxima.org/showpost.ph...1&postcount=12
My dynos dont show below 2k rpm, but I could not detect any difference.
dyno >>>>>>>>>>> butt-dyno
http://forums.maxima.org/showpost.ph...1&postcount=12
My dynos dont show below 2k rpm, but I could not detect any difference.
08-13-2005, 01:31 AM
#10
I use to run on a GAB for 5k miles...felt great! no low end losses what so ever...It felt pretty strong up top too...one of the coolest free mods for a maxima....
but hands down, the STS mod is the best free mod ive done....then throw on some lithium grase to the pivot ball on the bottom ($2.99)...and 3qts of MT-90 ($28 shipped)...one of the best mods i:ve done...hands down
but hands down, the STS mod is the best free mod ive done....then throw on some lithium grase to the pivot ball on the bottom ($2.99)...and 3qts of MT-90 ($28 shipped)...one of the best mods i:ve done...hands down
08-13-2005, 07:33 AM
#12
Newbie - Just Registered
Join Date: Aug 2005
Posts: 2
I've been wondering how do you go about having a govern takin or bypassing its function. Because, it shuting down the engine really isn't what i need. A friend of mine told me that you wouldn't be able to find a computer that didn't come with one on it but i was wondering if there was a way to manipulate it. 
08-13-2005, 08:07 AM
#13
If you look at the dyno graph, the GAB line shows highest gains at the top but in the low end it is trailing behind all others and it requires higher mph for the same torque/HP compared to the other lines, meaning loss in low end... Am I correct or did I misinterprate something? 
08-13-2005, 10:44 AM
#14
I am working on a chamber CAI system. The filter will go in same location as the Place Racing CAI, but would have the chamber where the stock box would be. Once I get it taken care of bugs worked out I'll dyno to see any gains. Here are a couple pics of the first box design. right now it's smaller then this cause still making it fit.
08-13-2005, 05:22 PM
#16
What I actually did to my filter box and hoses, I wrapped them with sticky 4" wide aluminum tape to reflect the heat from the engine (got the tape at Home Depot :-)... I'll see to post some pics of that...
08-13-2005, 06:22 PM
#17
i would think due to the velocity of the air that it would be unaffected by any attempted decreased temps in the air box. i used to have my old frankencar midpipe wrapped in something similar to what you described. i did temperature tests with my obd2 software getting the readings from the air temp sensor that was plugged into the midpipe. there was hardly any difference at idle or driving around.
08-15-2005, 05:31 AM
#19
Originally Posted by bgates1654
"Am I correct or did I misinterprate something?"
You definitely misinterpreted something.
You definitely misinterpreted something.
08-15-2005, 08:52 AM
#20
Senior Member
Join Date: Apr 2003
Posts: 523
I am not exactly sure what you misinterpreted. Your statement makes no sense to me. Perhaps by telling you that the first 3 were started at about 2k rpms and the last one (the GAB) was started around 3k rpm or maybe 2.5k I dont remember) will clear something up. The dyno operator ran it that time and didnt listen to/forgot what I said to start it at. However he did wind it out to about 7k rpms though. The others were stopped about 6200-6300 rpm becuase at that point the tach reads 6600. I was unaware that the tach reads low back then.
08-15-2005, 10:08 AM
#21
I just found it interesting that the GAB set up was ran differently than other 3 runs and with higher RPMs... We all know that RPM is directly related to HP so I am questioning the validity of the numbers, i.e. GAB "gains" at low end...
08-15-2005, 12:06 PM
#22
My GAB dyno shwpoed gains throughout,(amplified plot) but car is auto and to get anytghing less than 3.5k on a dyno is not possible in a 5.5g.
I feel no low end loss, also, it's a 3.5L, it actually has a good amount of low end. If you want this mod for racing etc, low end is important, but not after 1st gear, after that you'll never see less than 2k again.
SO my point here is, if you don't typically see anything greater than 5k rpm at least once a day, leave it stock.
Facts are, both myself and bgates have proven the GAB @ ~ 9whp, I am auto, and he's 6M, also, they show gaisn over the entire powerband, not only @ higher rpms.
I feel no low end loss, also, it's a 3.5L, it actually has a good amount of low end. If you want this mod for racing etc, low end is important, but not after 1st gear, after that you'll never see less than 2k again.
SO my point here is, if you don't typically see anything greater than 5k rpm at least once a day, leave it stock.
Facts are, both myself and bgates have proven the GAB @ ~ 9whp, I am auto, and he's 6M, also, they show gaisn over the entire powerband, not only @ higher rpms.
08-15-2005, 04:45 PM
#23
maybe "loss" is the wrong word to describe it. however when the intake is stock i notice slightly (but noticeable) better response from a stop and lower rpms <3k.
with the gab the car is slightly less responsive from a stop and low rpms but builds speed quicker as rpms rise, plus it's definitely more responsive than stock from about 4k all the way up. the 3.5L is strong enough to compensate for any percieved low end "loss" with the gab in, i just press the go pedal a little harder.
with the gab the car is slightly less responsive from a stop and low rpms but builds speed quicker as rpms rise, plus it's definitely more responsive than stock from about 4k all the way up. the 3.5L is strong enough to compensate for any percieved low end "loss" with the gab in, i just press the go pedal a little harder.
08-15-2005, 05:24 PM
#24
Senior Member
Join Date: Sep 2003
Posts: 201
When I drop the hammer from a dead stop my tires are dropping tread, so maybe it's not so bad to lose just a touch of low end until your tires catch. Of course I still have stock size Falken 512's and don't race, so my logic may not be that valuable.
08-15-2005, 07:37 PM
#25
Problem is dropping the hammer while really neat is not practical or necessary for everyday driving. In case this mod does make it necessary it is then inpractical. I asked the question with real world/day to day driving performance in mind. Low end matters in everyday driving stop & go driving, at least for autos.
08-16-2005, 04:42 AM
#26
Originally Posted by kobalt
Problem is dropping the hammer while really neat is not practical or necessary for everyday driving. In case this mod does make it necessary it is then inpractical. I asked the question with real world/day to day driving performance in mind. Low end matters in everyday driving stop & go driving, at least for autos.
08-16-2005, 04:48 AM
#27
i have a CAI and i definately have felt a loss in low end. i got the CAI after reading great reviews especially about the low end loss. so from stock to berk to cai..
losing low end it is very irritating, since i have an auto. i am thinking of going back to stock. with the cattman y-pipe and stock air box, i will still have a little extra juice
losing low end it is very irritating, since i have an auto. i am thinking of going back to stock. with the cattman y-pipe and stock air box, i will still have a little extra juice
08-16-2005, 05:33 AM
#28
Originally Posted by ZIPPIN
i have a CAI and i definately have felt a loss in low end. i got the CAI after reading great reviews especially about the low end loss. so from stock to berk to cai..
losing low end it is very irritating, since i have an auto. i am thinking of going back to stock. with the cattman y-pipe and stock air box, i will still have a little extra juice
losing low end it is very irritating, since i have an auto. i am thinking of going back to stock. with the cattman y-pipe and stock air box, i will still have a little extra juice
08-16-2005, 06:47 AM
#30
To me, for daily driving and occassional of the stop take-off, lower end is very important. Furthermore, I do appreciate the top end gains but I do not get to enjoy them as often as low end...
08-16-2005, 06:53 AM
#32
Originally Posted by NmexMAX
Invalid posts, we're talking about GAB .. not "full intakes" or "cais" ..
08-16-2005, 07:04 AM
#33
Originally Posted by NmexMAX
And you also have 0.5 less liters, so for everyday driving, you need all the low end you can get .. are you auto or 5 speed?
08-16-2005, 01:35 PM
#34
Member
Join Date: Mar 2005
Posts: 136
I have the GAB and a test pipe installed on my max and I definated noticed HP increase. Main thing is make sure you are running a K&N air filter. Acceleration is less responsive at first, but as said gains speed faster. So I would say for example if you are stuck behind a van in the slow lane and cars are flying past you in the fast lane you would need the quick response that the maxima is known for.
Note my test pipe was free. I made it my self out of steel tubing. Welded it to the exisitng hardware. Its ghetto but works.
Also does anyone have a link to the PAB CAI or STS mods?
Thanks,
Alec
Note my test pipe was free. I made it my self out of steel tubing. Welded it to the exisitng hardware. Its ghetto but works.
Also does anyone have a link to the PAB CAI or STS mods?
Thanks,
Alec
08-16-2005, 01:39 PM
#35
3.5L.
The GAB w/stock midpipe is worth 9 whp, and the GAB w aftermarket stright mid-pipe is worth 9.xx whp.. the midpipe isn't worth the added noise.
And my GAB dynos were done w/o a K&N, only paper filter element ...
**edit***
Oh shyt
he was talking about test pipe .. anyway still.
There's a few split hairs for you .
The GAB w/stock midpipe is worth 9 whp, and the GAB w aftermarket stright mid-pipe is worth 9.xx whp.. the midpipe isn't worth the added noise.
And my GAB dynos were done w/o a K&N, only paper filter element ...
**edit***
Oh shyt
he was talking about test pipe .. anyway still.There's a few split hairs for you .
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