Lagging at lower rpms

TheDuke · October 3rd, 2008, 02:43 PM

I know I have seen this somewhere but it's been a while and I couldn't find it in a search. My mustang is seriously lagging up to 3000 rpms. I know that is where the power band kicks in but it is so bad it feels like turbo lag. It kicks in hard when it gets to 3000 but not before. My mods to the engine are C&L CIA, Dyno tuned by Paul's High Performance w/ xcal, Delete Plates, Spydershaft driveshaft. Two things have changed since I got it tuned, 20' wheels and moved to 7000ft elevation (although I did get a 91 octane high elevation tune too). Would the elevation and wheels make that much difference? Do I need to get the tune adjusted?

Eye Candy
Who says silver can't look like Gold.

PiggySmallz · October 3rd, 2008, 02:52 PM

you need gears lol...my car moves pretty well with the 20's and my 4.10's

07 STROKER · October 3rd, 2008, 03:00 PM

i have a lag up to 2700 rpms , thats when my cams start making power

07stanggt · October 3rd, 2008, 03:02 PM

there was another guy on here that i dont think i have seen post in a while. Sorry i forgot his screen name. he complained of noticable loss in low torq with the c&l cai, he also tried the steeda. He aslo lived in denver or something at like 5000+ feet. he finally went with either the stock airbox or a no tune cai and said the car felt right then. Try putting your stock airbox on and the stock tune. The delete plates do cost you low end power no question about that so thats not helping you. i wouldnt have done the delete plates with your mods. might want to think about putting the control plates back on until you get some more power mods.

Or as mentioned. some 4.10s would go a long way in curing your ills my freind.

07 STROKER · October 3rd, 2008, 03:04 PM

ya ya....i want 4 10's now

DeMello · October 3rd, 2008, 03:20 PM

your car looks sick as fuck

qwik48r · October 3rd, 2008, 03:22 PM

mine does it too... little laggy under 3000, pulls really really hard anything past that.

I attribute it to my c&l racer creating less manifold vaccum (what builds low speed torque).

05bluestang · October 3rd, 2008, 03:31 PM

Originally Posted by 07 procharger

ya ya....i want 4 10's now

I just bought some from 07stanggt

, I'll be the Richmond Gear guniea pig. Got a good deal from him so If they don't hold up I'll by some FRPP 4.10's.....................

07 STROKER · October 3rd, 2008, 03:51 PM

i thought FRPP was richmond

05bluestang · October 3rd, 2008, 03:58 PM

Originally Posted by 07 procharger

i thought FRPP was richmond

Dunno, but wouldn't that be great (for me anyway)

TheDuke · October 3rd, 2008, 04:31 PM

I don't think it's the CAI because I had it at close to this elevation before (5000ish) and had no problems. When I had the stock wheels and lower elevation with the delete plates I had no problems either that's why I figured it was the heavier wheels or elevation. I am putting underdrive pullies in. Yeah I know I need gears

.

TheDuke · October 3rd, 2008, 04:31 PM

Originally Posted by DeMello

your car looks sick as fuck

Thanks! I like it too.

05bluestang · October 3rd, 2008, 04:35 PM

I think it's the elevation change. The air density has changed and you have less O2 in the mix. I know on some of the gas turbines and recips I worked with, the higher up you are the less power they make unless you compensate for it in the programming of the control system. May want to look into retuning for that elevation.
just my .02c

navyman8903 · October 3rd, 2008, 05:54 PM

ok you 20's are definately slowing you down. No doubt about it. They will cost you some power, like in the 10-20hp range, handling, and braking. Also the elevation is not that good for you. I would get 4.10's, a new diff, and some long tubes. If you are not in a stupid emissions gay state, then make sure your tuner guy tunes it so the o2's warm up later. I am orignaly from NY, and I have that stupid stuff. Even though the high flow cats are better than stock!!!!!!!!!!!!!!!!!!!!!!!!!! But yeah longtubes,4.10's and look into the meziere electric water pump (MODULAR FORD ELECTRIC WATER PUMP 4.6 BLACK MEZIERE) and make sure you get the relay kit. And call seth at brenspeed and ask him about your situation also.

GTSilverBullit · October 3rd, 2008, 06:02 PM

Originally Posted by TheDuke

I know I have seen this somewhere but it's been a while and I couldn't find it in a search. My mustang is seriously lagging up to 3000 rpms. I know that is where the power band kicks in but it is so bad it feels like turbo lag. It kicks in hard when it gets to 3000 but not before. My mods to the engine are C&L CIA, Dyno tuned by Paul's High Performance w/ xcal, Delete Plates, Spydershaft driveshaft. Two things have changed since I got it tuned, 20' wheels and moved to 7000ft elevation (although I did get a 91 octane high elevation tune too). Would the elevation and wheels make that much difference? Do I need to get the tune adjusted?

Eye Candy
Who says silver can't look like Gold.

dude i popped a major boner just lookin at your car man!

shes sweet dude!

DeMello · October 3rd, 2008, 06:04 PM

what body kit is that? at first i thought it was a cobra...

07KenneBellChargedGT · October 3rd, 2008, 06:12 PM

sick car.

PiggySmallz · October 3rd, 2008, 06:25 PM

the body kit is a cervini's c series body kit...just missing the side exhaust it looks like and has a different cervinis ram air hood

TheDuke · October 3rd, 2008, 09:30 PM

Thanks for all the help and the compliments. The body kit is cervini's with a cervinis 67' hood and stalker side skirts.

October 3rd, 2008, 02:43 PM	#1
TheDuke Regular 2006 Mustang GT Join Date: Dec 2006 Location: Middle of Nowhere Wyo Posts: 114 iTrader: 0 reviews	Lagging at lower rpms I know I have seen this somewhere but it's been a while and I couldn't find it in a search. My mustang is seriously lagging up to 3000 rpms. I know that is where the power band kicks in but it is so bad it feels like turbo lag. It kicks in hard when it gets to 3000 but not before. My mods to the engine are C&L CIA, Dyno tuned by Paul's High Performance w/ xcal, Delete Plates, Spydershaft driveshaft. Two things have changed since I got it tuned, 20' wheels and moved to 7000ft elevation (although I did get a 91 octane high elevation tune too). Would the elevation and wheels make that much difference? Do I need to get the tune adjusted? Eye Candy Who says silver can't look like Gold. __________________

October 3rd, 2008, 03:00 PM	#3
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	i have a lag up to 2700 rpms , thats when my cams start making power __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 3rd, 2008, 03:04 PM	#5
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	ya ya....i want 4 10's now __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 3rd, 2008, 03:20 PM	#6
DeMello Banned Join Date: Apr 2008 Location: Florida Posts: 3,947 iTrader: 1 reviews	your car looks sick as fuck __________________ Just Another Bolt on GT [IMG]http://i45.tinypic.com/54f5ua.jpg[/IMG] Stock Longblock - 287/276 Low 12s NA! 10s on the spray?

October 3rd, 2008, 03:22 PM	#7
qwik48r MM Fanatic alotta shit no fat girls fast Join Date: Jan 2008 Location: in the woods Posts: 3,681 iTrader: 1 reviews	mine does it too... little laggy under 3000, pulls really really hard anything past that. I attribute it to my c&l racer creating less manifold vaccum (what builds low speed torque). __________________ mind your business what i drive... i'm on a fucking mustang forum. qwik's build

October 3rd, 2008, 03:02 PM	#4
07stanggt I Post Entirely Way Too Much 2007 GT Join Date: Mar 2007 Location: Ellicott City, MD Posts: 11,950 iTrader: 1 reviews	there was another guy on here that i dont think i have seen post in a while. Sorry i forgot his screen name. he complained of noticable loss in low torq with the c&l cai, he also tried the steeda. He aslo lived in denver or something at like 5000+ feet. he finally went with either the stock airbox or a no tune cai and said the car felt right then. Try putting your stock airbox on and the stock tune. The delete plates do cost you low end power no question about that so thats not helping you. i wouldnt have done the delete plates with your mods. might want to think about putting the control plates back on until you get some more power mods. Or as mentioned. some 4.10s would go a long way in curing your ills my freind.

October 3rd, 2008, 03:51 PM	#9
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	i thought FRPP was richmond __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 3rd, 2008, 04:31 PM	#11
TheDuke Regular 2006 Mustang GT Join Date: Dec 2006 Location: Middle of Nowhere Wyo Posts: 114 iTrader: 0 reviews	I don't think it's the CAI because I had it at close to this elevation before (5000ish) and had no problems. When I had the stock wheels and lower elevation with the delete plates I had no problems either that's why I figured it was the heavier wheels or elevation. I am putting underdrive pullies in. Yeah I know I need gears . __________________

October 3rd, 2008, 04:35 PM	#13
05bluestang Enthusiast 2005 Mustang GT Join Date: Jan 2008 Location: I'm as bored as a midget in a theme park Posts: 661 iTrader: 2 reviews	I think it's the elevation change. The air density has changed and you have less O2 in the mix. I know on some of the gas turbines and recips I worked with, the higher up you are the less power they make unless you compensate for it in the programming of the control system. May want to look into retuning for that elevation. just my .02c __________________ 05 Sonic Blue GT, with a shitload of mods... Oh yea and a blower... bring it.................. Founder "Dead Battery Club"

October 3rd, 2008, 06:04 PM	#16
DeMello Banned Join Date: Apr 2008 Location: Florida Posts: 3,947 iTrader: 1 reviews	what body kit is that? at first i thought it was a cobra... __________________ Just Another Bolt on GT [IMG]http://i45.tinypic.com/54f5ua.jpg[/IMG] Stock Longblock - 287/276 Low 12s NA! 10s on the spray?

October 3rd, 2008, 09:30 PM	#19
TheDuke Regular 2006 Mustang GT Join Date: Dec 2006 Location: Middle of Nowhere Wyo Posts: 114 iTrader: 0 reviews	Thanks for all the help and the compliments. The body kit is cervini's with a cervinis 67' hood and stalker side skirts. __________________

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: Lagging at lower rpms
Thread	Thread Starter	Forum	Replies	Last Post
rpms	sgrcltpunk	99-04	13	March 5th, 2008 08:39 PM
what rpms?	04Roush	99-04	9	February 5th, 2008 12:02 AM
Rpms	Mustang RacR94	99-04	9	November 23rd, 2007 10:14 PM
Its lagging real bad is it happeing	Drick	The Clubhouse	13	November 7th, 2007 08:16 PM
Engine Lagging After Stop-Go Driving	OcOnnor220	99-04	7	October 7th, 2007 07:29 PM

All times are GMT -4. The time now is 03:33 AM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.