Leempolo3

Hey guys,

Quick intro, I have a 2006 E55 with 37k miles. Only mods are drop in K&n's and 2nd cats and resonator delete. Recent maintaince included all new fluids and filters, new plugs, both belts, and new SC bearing. The car had been sitting for a year before I got it.

Recently I ran against a new Q50 Infiniti (I think 328hp) off of a red light. My tires spun for about a second and he took a full length car lead. It stayed the exact same distance until we both had to brake (around 80-90mph).

Tonight I just ran against my friend's brand new 435i coupe. Again the exact same thing. I spun the tires a little more this time but the car didn't catch up. I couldn't believe it.

I know that I have a fuel leak (strong smell by rear driver side wheel) and I have a vacuum leak somewhere near the power steering pump (hissing sound).

But is it possible to lose that much power with just those problems?? These cars are low 300hp cars. I should be killing them.

Thoughts?

Leempolo3

Oh and one other thing... I could hear the supercharger so I knew that wasn't it. Thanks guys.

dchl21

ease into the throttle ..floor it after you grip. btw that's sad you should take it in and get it checked.

Blue55

Could be your IC pump

black06c230

IC pump

Leempolo3

IC Pump makes that big of a difference???

Also, If the IC Pump is bad wouldn't that effect the engine temp? Mine is always around 85-90c.

C3Duece

if the I/C pump isn't working the S/C pulley won't engage which means your S/C isn't working and you're trying to go fast naturally aspirated. This would explain why those other cars are pulling on you. Also, the I/C pump does nothing to influence engine temp...that's the water pump and thermostats job.

I/C pump is pretty cheap and the labor isn't too bad. Hopefully this is the problem as its a pretty easy fix.

Leempolo3

I hope so too!

The thing is I heard the supercharger when I took off. So is it possible it engages at first and then shuts off?

dchl21

wish you luck on the fix man. you should be at least a bus length ahead of the q50

Toadster

I lost 48WHP when my IC pump died

dynoed with a failed pump and 400 to the wheels (with a pulley & tune)
replaced IC pump 448HP to the wheels (same pulley & same tune)

your gas smell is probably the fuel pumps needing replaced - see the sticky
definitely check the vacuum leak too

the S/C will work but you're pulling timing so bad with really HIGH IATs
i think eventually the S/C will go into limp mode at a certain temp...

Leempolo3

Wow, that's a lot. But even still, lets say I lost 50-60hp due to the pump, I would still expect to catch up and pass both cars with 409hp... or am I wrong?

DVC

I don't think so....you have a vac leak, no power mods, and a dead I/C pump. Also, the transmissions in these newer cars you're running make up for less power.

You have to understand, the I/C pump is *essential*. If you're running NA you're SOL.

Leempolo3

Running NA? Sorry, I'm new to this.

Hulk

Naturally aspirated

No supercharger or no turbo

Leempolo3

Thanks!

RedBullJnky

Put some turbos in it and you will never have to worry about the ic pump again.

HeissRod

Toad may have dynoed a 48whp loss, but it REALLY feels much more than that. The car feels like a downright dog.

T9ja

Take it to the track, see what you're running, and if you are trapping <108 MPH, check your ic pump first, and go from there. Those above mentioned cars are trapping about that MPH, that's why you can not accelerate past them.

Leempolo3

This seems like an awesome post... only thing is I have no clue what trapping is lol. Can you please tell me what you meant by "trapping about that MPH" cause I really want to know why I couldn't catch them.

RedBullJnky

It's your mph on the track. Trap speed

T9ja

Have you ever been to a 1/4 mile track? If you've not, you need to go, and you will learn from there.

TheOtherDodge

Along with what everyone else is saying, you need to be very familiar with your car. By that, I mean how it acts under certain conditions, what the car wants to make it run the fastest, etc. And, racing is NEVER about who has the fastest car, it is who gets to the end of the race first. On the street where lower power cars or cars with AWD (ie better traction) will always have a very big advantage. And as mentioned above, the more transmission gears, the better and with ours only having 4 forward gear, we are really at a disadvantage over the newer cars that have 6 and 7 forward gears.

Once you get things sorted out with your car, you should beat those guys easily.

Ls1toAMG

I would say your heat soaked and your car is pulling timing. IC pump most likely.
No way you should lose to a Q50. At this point I wouldn't be running anyone until its fixed.
You should easily feel that much of a power loss.

forcefed4door

Exactly what I was thinking. This should have been noticed on the test drive before even buying the car.

novae500

Did I miss that this car has a tune on it?