Sluggish and weird sound when I used nitrous
02-05-2008, 05:21 PM
#1
TECH Resident
Thread Starter
iTrader: (22)
Join Date: Oct 2006
Location: Shreveport, Louisiana
Posts: 910
Likes: 0
Received 0 Likes
on
0 Posts
Sluggish and weird sound when I used nitrous Before anyone asks, I posted in the nitrous section also
hey guys,
I was on my way home a few minutes ago and was toying with a new Mustang GTR. The first time the nitrous would activate and it was fairly sluggish like a surging. Then I used it again and I heard and fairly loud "tick tick" sound so I backed out of it immediatly but couldnt have been over 6,000 RPM.
My question(s) is this: Could the sluggish feeling be due to a rich tune? and what else besides a PTV clearance issue could the tick tick sound be? Once I got home and let it idle and revved it and everything sounded ok.
Its a wet shot BTW
Im all ears fellas
Chris
hey guys,
I was on my way home a few minutes ago and was toying with a new Mustang GTR. The first time the nitrous would activate and it was fairly sluggish like a surging. Then I used it again and I heard and fairly loud "tick tick" sound so I backed out of it immediatly but couldnt have been over 6,000 RPM.
My question(s) is this: Could the sluggish feeling be due to a rich tune? and what else besides a PTV clearance issue could the tick tick sound be? Once I got home and let it idle and revved it and everything sounded ok.
Its a wet shot BTW
Im all ears fellas
Chris
Last edited by 02blackbeauty19; 02-05-2008 at 05:34 PM.
02-05-2008, 06:36 PM
#3
TECH Resident
Thread Starter
iTrader: (22)
Join Date: Oct 2006
Location: Shreveport, Louisiana
Posts: 910
Likes: 0
Received 0 Likes
on
0 Posts
I didnt, I already had it on because I was just going to give it a quick run through on the last street to my house. It was just coinsidence that the Mustang was there. He wouldnt race anyway....
Though it did look fairly nice.....red on bottom with black on top. GTR whatever the hell that means haha
Though it did look fairly nice.....red on bottom with black on top. GTR whatever the hell that means haha
02-05-2008, 08:47 PM
#4
On The Tree
iTrader: (4)
Join Date: Jan 2006
Location: middle of nowhere ca.
Posts: 150
Likes: 0
Received 0 Likes
on
0 Posts
sounds to mee like the nitrous wasnt purged and all the extra fuel caused the car too feel slugish. as far as the ticking i think it could be due to a rich misfire. is youre car still ticking? or whas it only on that full throttle run?
02-06-2008, 08:35 AM
#6
TECH Resident
Join Date: Jan 2003
Location: South Alabama
Posts: 937
Likes: 0
Received 0 Likes
on
0 Posts
http://www.fordmuscle.com/archives/2004/04/MustangGTR/
Trending Topics
02-06-2008, 10:14 AM
#8
"The Mustang GT-R features Ford Racing’s 440-horsepower "Cammer" crate engine that already is affordably available to grassroots racers, and can be tuned to produce more than 500 horsepower under certain race series rules. Last year, a tuned 505-horsepower version of the "Cammer" notched world-class performance and endurance credentials by powering a Focus Daytona Prototype to victory at the 24 Hours of Daytona race."
http://www.fordmuscle.com/archives/2004/04/MustangGTR/
http://www.fordmuscle.com/archives/2004/04/MustangGTR/
02-06-2008, 10:44 AM
#9
TECH Resident
Thread Starter
iTrader: (22)
Join Date: Oct 2006
Location: Shreveport, Louisiana
Posts: 910
Likes: 0
Received 0 Likes
on
0 Posts
Bottle pressure was a tick below 900 psi so it was a little low. I feel like an idiot saying this but I dont know what LG has the timing set at. I feel they did a sub par job on the tune anyway. TR6 plugs gapped at .035
02-06-2008, 12:22 PM
#10
The plugs are good and i wouldn't imagine they would have your timing too high with the nitrous. I though you might be getting detonation, but now it sounds like some electrical thing that is clicking your relays. Maybe the fpss is cutting the nitrous off for some reason. What kind of fuel pressure drop have you had before. What fuel pump do you have?
02-06-2008, 02:41 PM
#12
LS1Tech Sponsor
iTrader: (9)
Join Date: Aug 2005
Location: Ponte Vedra Beach Fl
Posts: 639
Likes: 0
Received 0 Likes
on
0 Posts
thats why wet kits need pumps because they pull fuel from your fuel injector supply off the rail, word on the street is 100 shot your good on a stock pump any bigger youll need an upgrade. second thing is how many miles are on your stock pump?
02-06-2008, 02:47 PM
#13
TECH Regular
iTrader: (9)
Join Date: Mar 2006
Location: Fresno, Ca
Posts: 457
Likes: 0
Received 0 Likes
on
0 Posts
you need an aftermarket fuel pump for sure man. You think the stock one can handle 540rwhp all day long?? I doubt it, you may be running lean with the nitrous and the "ticking" could be pinging...
02-06-2008, 02:47 PM
#14
He already has a strong heads/cam setup + 125 shot. Deff need to look into the racetronix kit. My guess is that fuel pressure is dropping and the fpss is turning the nitrous off. The tick could be the relay. JMO
Last edited by bluehawk2; 02-06-2008 at 02:48 PM. Reason: jmo
02-06-2008, 03:34 PM
#16
TECH Resident
Thread Starter
iTrader: (22)
Join Date: Oct 2006
Location: Shreveport, Louisiana
Posts: 910
Likes: 0
Received 0 Likes
on
0 Posts
Thats not what I wanted to hear haha Ill look into fuel upgrades and for the meantime ill bump it back down to a 100 shot. I hardly use the nitrous anyway so its no big deal. Thanks fellas
02-07-2008, 08:37 AM
#18
I would say that the guys here have nailed it on the head. Your fuel pump cant handle that kinda power. Im sure its having trouble with just the H/C, then a 125 shot on top of that 
... Your pump is maxed out when you spray and im sure whatever relay is shutting your nitrous off but some fuel still goes by which is when you getting that surging you talked about. I definitely wouldn't spray it anymore until you know you can supply the motor with enough fuel 
.
... Your pump is maxed out when you spray and im sure whatever relay is shutting your nitrous off but some fuel still goes by which is when you getting that surging you talked about. I definitely wouldn't spray it anymore until you know you can supply the motor with enough fuel .