My car getting slower ?

lvmustanggt

New Member

Apr 9, 2006

721

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0

Las Vegas

Mar 23, 2007

#1

• Mar 23, 2007

• #1

Before I had cams done I used to run 13.5 1/4 miles at 103 mph at only 265rwhp. Now I got 293rwhp with cams . After my cams , kyb adj shock and struts and bbk LCA
I am running 14 sec 1/4 with only 96mph wtf ? Why am I running slower then before ?

Does any one know which setup is good on kyb adj shock and struts.
I have tried 1-4 up front and 4 on back shocks. back shocks can be set up to 8.

I used to pull 1.8 60' with MT ET Street but after I did my shocks, struts, LCA and MM SFC I haven't got 1.8 60'. what is wrong here ? I am not happy at all

 

Skidzz

Tinkerbell

Apr 11, 2005

328

1

19

Salt Lake City, UT

Mar 23, 2007

#2

• Mar 23, 2007

• #2

Are you having any traction problems? What were the track conditions? Was it the same track that you ran 13.5's on? That doesn't make sense. You should be hitting 12's with those mods.

 

Stan Weiss

Member

Dec 8, 2006

347

2

16

Philadelphia, PA

Mar 23, 2007

#3

• Mar 23, 2007

• #3

There could be many reasons for the ET being off. I look at a run as ET being about traction and MPH being about HP. The problem I have is the MPH not only did not stay the same but dropped by 7 MPH. You should be able to run 96 MPH or more with a stock engine and car. When did you last have the car on the dyno? Can you post some old and new time slips?

 

lvmustanggt

New Member

Apr 9, 2006

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Las Vegas

Mar 23, 2007

#4

• Mar 23, 2007

• #4

last dyno was 293rwhp and 303 torque with cams. Track the same , I know that after
I did my shocks and struts , lca and mm sfc my car runs slow. My stock shocks and struts and mt et I used to pulled 1.8 60' but now I haven't got 1.8 60' after that. Plus
after my cams done I hear whistle comming about of my engine bay. Don't know where it's comming form. Only thing I can think of is valve cover cause I see some oil around it.

same track with 265rwhp I ran 13.5 , 1.8 60' 103rph
now 293rwhp and 14.1- 14.3 with 2.0 60' 96mph.

I just went to the track wed 21 march , I did 14.2 and 14.5 1/4 mile.

 

Stan Weiss

Member

Dec 8, 2006

347

2

16

Philadelphia, PA

Mar 23, 2007

#5

• Mar 23, 2007

• #5

1) How much time past from your dyno test until you took the car to the track?
2) Find you oil leak and fix it
3) Find the source for the noise and fix it
4) Diagnose where you are losing HP - leak down test - if you do not have one a compression test. Remember that your cams can cause this to read below a stock engine this is normal.

 

lvmustanggt

New Member

Apr 9, 2006

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Las Vegas

Mar 23, 2007

#6

• Mar 23, 2007

• #6

I just got dyno again like week ago. I went to track wed 21 march. My tuner guy told me I am leaning at 6000 rpm and suggest me to get fuel pump.

I just bought this , it will be here today.

http://cgi.ebay.com/ebaymotors/ws/e...RK:MEWN:IT&viewitem=&item=270099158315&rd=1,1

http://cgi.ebay.com/ebaymotors/ws/e...RK:MEWN:IT&viewitem=&item=250054578315&rd=1,1

 

lvmustanggt

New Member

Apr 9, 2006

721

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Las Vegas

Mar 23, 2007

#7

• Mar 23, 2007

• #7

just got my exhaust and fuel pump

 

mustangkid05

New Member

Mar 10, 2006

199

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0

Mar 23, 2007

#8

• Mar 23, 2007

• #8

could be the gas?

 

lvmustanggt

New Member

Apr 9, 2006

721

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0

Las Vegas

Mar 23, 2007

#9

• Mar 23, 2007

• #9

I only use 91 ceveron

 

Stan Weiss

Member

Dec 8, 2006

347

2

16

Philadelphia, PA

Mar 23, 2007

#10

• Mar 23, 2007

• #10

lvmustanggt said:

I just got dyno again like week ago. I went to track wed 21 march. My tuner guy told me I am leaning at 6000 rpm and suggest me to get fuel pump.

I just bought this , it will be here today.

http://cgi.ebay.com/ebaymotors/ws/e...RK:MEWN:IT&viewitem=&item=270099158315&rd=1,1

http://cgi.ebay.com/ebaymotors/ws/e...RK:MEWN:IT&viewitem=&item=250054578315&rd=1,1

Click to expand...

Lets hope the pump fixes the problem. You may have burnt a valve from running the car after your tuner told you it is lean. You still may need to do that leak down test.

 

lvmustanggt

New Member

Apr 9, 2006

721

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0

Las Vegas

Mar 24, 2007

#11

• Mar 24, 2007

• #11

I got my exhaust and fuel pump today. I will be installing my exhaust sunday but I have not clue about fuel pump. Where do I take it to have leak down test ?

 

hotmustang331

Active Member

Apr 29, 2004

2,967

3

48

Bastrop,TX

Mar 24, 2007

#12

• Mar 24, 2007

• #12

How does the car feel? Like on the street with 292RWHP 1st and 2nd gear should be TOTALLY gone froma slow roll, and gaining traction at around 60MPH. (with street tires that is)

I mean there would be a HUGE difference in feel between a 230RWHP car (96MPH traps) and 293 (107ish MPH traps) .

Also what RPM are you shifting at now when you run it in the 1/4? Lets just hope whoever installed your cams, did a good job.

 

S

san~man

O-G

Founding Member

Nov 29, 1999

8,546

3

78

A little grass shack on a big lava rock

Mar 24, 2007

#13

• Mar 24, 2007

• #13

He changed his struts/shocks to KYBs from the stockers, so he's probably lost weight transfer hence his lower 60ft times (2.0 versus 1.8 previously).

 

lvmustanggt

New Member

Apr 9, 2006

721

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0

Las Vegas

Mar 24, 2007

#14

• Mar 24, 2007

• #14

I just order centerforce dual friction clutch today. I know my clutch slips a lot so I think I am loosing power at the track

 

lvmustanggt

New Member

Apr 9, 2006

721

0

0

Las Vegas

Mar 24, 2007

#15

• Mar 24, 2007

• #15

hotmustang331 said:

How does the car feel? Like on the street with 292RWHP 1st and 2nd gear should be TOTALLY gone froma slow roll, and gaining traction at around 60MPH. (with street tires that is)

I mean there would be a HUGE difference in feel between a 230RWHP car (96MPH traps) and 293 (107ish MPH traps) .

Also what RPM are you shifting at now when you run it in the 1/4? Lets just hope whoever installed your cams, did a good job.

Click to expand...

First gear I don't even feel my car moving, 2nd is better 3rd full good. I am going to install exhaust and fuel pump tomorrow. I order centerforce duel frition clutch today with some upr clutch stuff. cams were done by sliver state motorsport, I shift at 6000-6200 rpm. I still cannot find where is this whistle comming from. It started after the cams install.

So when I install fuel pump what I have to do and as you said I only need to put pump not the hole big big white canister

 

Crzyhrse

Active Member

Dec 23, 2004

0

2

38

Seattle, WA

Mar 24, 2007

#16

• Mar 24, 2007

• #16

Not sure what the GT and Mach run for fuel pumps, but if they both run the same pump, I don't see how that could be the problem. I'm at 300RWHP with the stock fuel pump.

 

trinity_gt

10 Year Member

Jan 31, 2003

3,125

81

99

Canada

Mar 25, 2007

#17

• Mar 25, 2007

• #17

Overlay your 265 and 293 dyno plots and see what happened to the area under the curve. Peak HP only tells part of the story.

 

Stan Weiss

Member

Dec 8, 2006

347

2

16

Philadelphia, PA

Mar 25, 2007

#18

• Mar 25, 2007

• #18

Since the original post we find out that your tuner says it is lean get a new fuel pump. Than an oil leak and a whistle noise. Than "my clutch slips a lot". Why don't you fix all these problems before asking for help?