The worst mod you ever did to your twin?

[mmcelroy]

Originally Posted by Kaotic Lazagna

Injen intake. Didn't see any performance or fuel economy benefits, and made stop and go traffic driving horrible. Sold it after a week of giving it a shot.

aFe Takeda is similar... stop and go is OK, but agreed on the lack on benefits. sounds nice, but without a MAF tune, not going to see anything else.

[Wise]

Agree with Intake mod.

I have an aFe Takeda and there's nothing wrong with it, but for the price I should have just got a drop in filter. Especially seeing as I'm going to probably put the stock intake back on when I supercharge anyhow.

[Chanpion]

Red rally flaps with stock width wheels. Just looked weird proportion and colour wise. The winter benefits were amazing though so much mud, slush, snow, ice and salt block. Took them off after the winter season, back to stock splash guards. I just deal with the spray when I hit the gravel roads, which is quite a bit.

[phantasticity]

Installing 1320 perf header, broke o2 sensor, had to buy new one of dealer, dealer gave me fcked sensor. Can't return. Fun time.

[Wise]

My 17x9 Enkei RPF1 wheels.

Don't get me wrong I like the way they look. But I miss the flowy light feeling that you don't get now with a 235 or 245 tyre.

When I get a chance I'm probably going to sell the Enkei's and pick up some OZ Ultraleggera 17x8s and run a 225 summer tyre.

[Kaotic Lazagna]

Originally Posted by weederr33

A high flow air filter was the best decision compared to an intake

Yeah, I went from a K&N drop in to that Injen, and back to the K&N drop in. Haha

[Kaotic Lazagna]

Originally Posted by mmcelroy

aFe Takeda is similar... stop and go is OK, but agreed on the lack on benefits. sounds nice, but without a MAF tune, not going to see anything else.

I didn't even really notice a sound change with the Injen, unlike the K&N Typhoon SRI I had on my Yaris.

[imaguitar]

Originally Posted by Kaotic Lazagna

Injen intake. Didn't see any performance or fuel economy benefits, and made stop and go traffic driving horrible. Sold it after a week of giving it a shot.

Wait how did an intake make stop & go traffic driving horrible?

[kev60625]

Originally Posted by Wise

My 17x9 Enkei RPF1 wheels.

Don't get me wrong I like the way they look. But I miss the flowy light feeling that you don't get now with a 235 or 245 tyre.

When I get a chance I'm probably going to sell the Enkei's and pick up some OZ Ultraleggera 17x8s and run a 225 summer tyre.

I have 18x7.5s on 225's. Feeling is still nimble and light

The wheels weigh under 14lbs so that's also probably why, though.

[Kaotic Lazagna]

Originally Posted by imaguitar

Wait how did an intake make stop & go traffic driving horrible?

Heat soak severely reduced throttle response and acceleration. My intake temp reading via my Scan Gauge II actually read much higher with the Injen intake. I can't remember the exact readings, but in stop and go traffic, I believe it was easily 20 to 30 degrees higher than the stock box with K&N drop in. I could floor it in 1st gear, and the engine will hesitate. RPM's would go up, and then the engine would act like it's about to stall, then repeat. Car doesn't move forward. So not only did it make stop and go horrible since the car would only move forward with only a slight throttle at most, I felt unsafe since I wouldn't be able to get out of the way in an emergency.

[headlikeahole]

Getting it undercoated

[nikitopo]

Originally Posted by weederr33

Lightweight crank pulley. Complete waste of money

This was puzzling me a bit for some time. There is a reputable company in Japan saying that a lightweight crank pulley kit works and there are users saying the same like you. That it is a complete waste of money.

I tried to model the weight reduction of a LWP and calculate the gains from the moment of inertia. Fact is that the gains are very small to be noticable. However, the claims of the Japanese company are not wrong.

Here is some conclusions:
- You need to change the pulleys with a stiff material. Original pulleys are made from cast iron and they deform slightly with rotation. You can imagine material deformation as an additional parameter in the moment of inertia law. Only the OEM crank pulley might deform much more, because of the included rubber structure. Companies are using for the LWP the cheap 6061 aluminum with a yield strength of 240 MPa. This material seems to not provide enough stiffness. There is a much harder aluminum with a yield strength of 500 MPa, but it is very expensive.
- You need a kit of at least 3 pulleys (crank, alternator, water) and not just a crank pulley. Companies are providing usually only the crank pulley because it is cheaper and easier to install.
- You need to under-drive the system. Usually, this can be done with under-driving the alternator.


My findings were that each of the above can provide small gains and all of them in combination could provide a sufficient gain which is noticeable. Fact is that very few manufacturers provide such solution.

[dhuang]

Getting slightly curious and performing the exhaust pops and backfire mod:
http://www.ft86club.com/forums/showthread.php?t=61069

Finally the dream of sounding like a Huracan or F-type will come true...

Reverted the tune after 72 hours.

[Yoshoobaroo]

Originally Posted by dhuang

Getting slightly curious and performing the exhaust pops and backfire mod:
http://www.ft86club.com/forums/showthread.php?t=61069

Finally the dream of sounding like a Huracan or F-type will come true...

Reverted the tune after 72 hours.

Yea that bad?

-Josh