Speed 3 Stock Motor - Biggest Weaknesses??

[Ghetto Mods]

O.K. class for today's essay test, answer the following question:

What is the biggest weakness of the stock motor and why? i.e. intake restriction, exh. restriction, fuel flow, spark, etc...

Be sure to include a good explanation.

 

[trufanatic]

To be quite honest no one really knows that as yet, the car has only been out a year plus alot of vendors hasnt really started pushing it. but here are my impressions:

The intake manifold design looks terrible

The collectors on the stock tubular manifold are punie

The stock motor mounts are garbage

The stock exhaust is a very inefficient design (i can get beat on for this one later)

Although the hood and TMIC were VERY well designed, are do work while cooled and moving, i would have prefered a SMIC or FMIC.

I think thats about it for now, only had my car 4-5 months

 

[aaronc7]

what's so bad about the stock exhaust?

 

[trufanatic]

what's so bad about the stock exhaust?

i mean seriously, 40whp PROVEN with just a downpipe! 50-55whp with a TBE!? my old srt4 gained 20-30 off an upgraded exhaust and that damn thing didnt come with any mufflers and 1 CAT. of all the turbo cars i've owned (9) aside from my supra this one gains the most off an exhaust.

 

[Haltech]

Lets talk about what matters.. Rods and Pistons, followed by the tranny.

 

[acidbug]

I would def have to agree about the exhaust.

Coming from the speed6 family...i have read about big gains with upgraded turbo manifold+down pipe when compared with any other mod.

But than again it's been found that the current fuel system is now the limiting factor in attaining over 325whp.

-C

 

[speed3dude]

The biggest weakness now is the lack of a comprehensive computer crack.

The intake/exhaust are quite restrictive; however, they can be replaced entirely with parts currently available for huge gains as mentioned.

 

[GoFast]

i think the suggestion that the entire stock exhaust sucks is a bit misleading. The cb is just fine and flows great. it is the dp that sucks. thats where the restrictions are coming from. just a little clarity

 

[flipstylex]

hhmm... i dont like the fact power cuts off at 5500 rpm...the gearing are short too..makes u shift dramatically

 

[ill_eagle94]

Stock BPV seems to leak.
High pressure fuel pump (cam driven) isn't very strong.

My only complaints are:

Gearing. With all this torque, we could use some long ass gears to ride out.
Wheel design. Why give us such a retarded offset?

 

[Dream]

Lets talk about what matters.. Rods and Pistons, followed by the tranny.

This.

 

[bbychvz]

So is a cobb SRI and Cp-e down pipe good enough for happy gains? maybe a turbo smart bov? to help with leaking problems?

 

[cosic]

hhmm... i dont like the fact power cuts off at 5500 rpm...the gearing are short too..makes u shift dramatically

It's the worst! I feel like my car gets tired after 5700. Brutal!
And from what I've read in my short time of owning one of these bad boys, the stock intake. Can't wait for Cobb!

 

[Mid_Life_Crisis]

So is a cobb SRI and Cp-e down pipe good enough for happy gains? maybe a turbo smart bov? to help with leaking problems?

If you do the first two upgrades you should be very pleasantly surprised by the results from what I have read in various forums. The next thing I would do is buy a quality boost gauge. Monitor what your boost is doing, and from that decide if you need to make mods such as a new BPV. Unless you are going to go racing, it does not appear to be necessary to resort to cheating the electronics or installing a boost controller. Relatively simple install and forget it bolt-on upgrades can get this car making more power than a front wheel drive can realistically make use of. Just the two mods mentioned here will have you spending more money replacing shredded tires than you will want to think about.
The jury is still out on at what point the factory CDFP (cam driven fuel pump) needs to be upgraded, but it may turn out that a CDFP should be your third power mod.
After that, or maybe before, you will want to think about an upgraded intercooler. Any decent top mount should make a significant improvement in conjunction with the other mods and is a simple install. It will cool the charge going into the motor, but from what I understand, perhaps even more important, the biggest gain may be because the stock intercooler is so restrictive and an aftermarket replacement will flow better.