[rader1]

Originally Posted by teemmy

from what i've been reading, cobb pushes out 16-17psi while stock is only around 7-8. Should I be worried about excessive wear without any accompanying mods to help with cooling?

The thing with turbos you need to keep in mind is shaft speed. You need to increase shaft speed to meet boost demands as rpms increase. I.e.16psi at 3K rpm is way easier on the turbo than 16psi at 7K rpm. Cobb claims that the speeds required to meet the boost targets in the mid range is well within the stock units capabilty.
However, an Intercooler is a very good mod to have anyway. The engine loves the cooler air and it makes the turbos job easier. Same thing with downpipes, the less backpressure the better.

[bryce]

[bryce]

Up for ?'S

[teemmy]

Thanks Rader for the response, but could you explain a little more? I don't think I fully understand what you mean by shaft speed...(crankshaft revolutions?)

I'm not gonna go crazy with my car or anything, but from what I'm getting from your answer is that i shouldn't be redlining my car at such a high boost, but rather only push my car to mid rpms 3-5k?

Please clarify. Thanks for the help

[bryce]

^he's referring to turbo shaft speed, not engine. Cobb has said numerous times that their tune doesn't push the turbo's that hard. 15psi (or more) in the midrange is far less strain for the turbo's (and motor) than 15psi at redline. Cobb and procede taper boost to preserve turbo life at higher rpms. Feel free to rev your car however much you want. N54's loose power above 6k or 6.5k rpms anyways, no point to rev them out completely

[teemmy]

Thanks for the help! Another quick question, some people on the cobb thread have been commenting about stock vs linear throttle response. Could you explain this to me more? (I assume linear = throttle opens up linearly according to amount of gas pedal depression, whereas stock isn't?) I have a 6mt, so i'm curious which setting would be more appropriate for me.

I feel like i personally hijacked this thread...

[bryce]

Originally Posted by teemmy

Thanks for the help! Another quick question, some people on the cobb thread have been commenting about stock vs linear throttle response. Could you explain this to me more? (I assume linear = throttle opens up linearly according to amount of gas pedal depression, whereas stock isn't?) I have a 6mt, so i'm curious which setting would be more appropriate for me.

I feel like i personally hijacked this thread...

you're right, stock throttle mimicks the stock throttle response.....ie 30% of throttle = x amount of boost. linear throttle means you have to press the gas pedal further to get the same amount of boost. it's all part throttle response settings.

i'd recommend trying all throttle maps available, see which one you like the best. i personally liked the stock and aggressvie throttle maps the best, but linear seems popular, as well

[bryce]

Morning bump

[nafoo]

Do you still want the Stett CAI v1? I have Michael1284's down here in Houston now

[teemmy]

fuel level in the tank has no correlation for hpfp failures, correct? If i'm running below quarter tank then I'm fine?

[bryce]

Originally Posted by nafoo

Do you still want the Stett CAI v1? I have Michael1284's down here in Houston now

I texted him today, thanks

Originally Posted by teemmy

fuel level in the tank has no correlation for hpfp failures, correct? If i'm running below quarter tank then I'm fine?

Nothing has been proven, but I always fill up before the light comes on, just to be safe. You can get a specific misfire and misfire code due to the tank being too low

[bryce]

Up

[bryce]

which intercooler to buy? post questions here!

[bryce]

Sunday morning bumpage

[bryce]

[bryce]

Up

[bryce]

[phikap36]

So mixed reviews on the topic. 335 intake. Noise maker or actual gains. Cobb stage 1 drive installed. No other mods.

[RnmEvo9]

Around what temperature of EGT's is considered extremely high?

[Sleeper]

Originally Posted by phikap36

So mixed reviews on the topic. 335 intake. Noise maker or actual gains. Cobb stage 1 drive installed. No other mods.

Don't waste your time or money on Stage 1. Cobb Stage 2+ is the only stage where an intake is a "Required Upgrade" versus a "Suggested Upgrade."

There are better things to spend money on, IMO.

[bryce]

Originally Posted by phikap36

So mixed reviews on the topic. 335 intake. Noise maker or actual gains. Cobb stage 1 drive installed. No other mods.

Originally Posted by Sleeper

Don't waste your time or money on Stage 1. Cobb Stage 2+ is the only stage where an intake is a "Required Upgrade" versus a "Suggested Upgrade."

There are better things to spend money on, IMO.

a cold air intake (like stett) or dual cone intake (like bms or vishnu) would be beneficial and provide gains on stage I. cobb themselves have said that on their website. i wouldn't mess with an injen or afe intake personally. they're over priced and not as effective as the other 2 intakes mentioned above

[bryce]

Originally Posted by RnmEvo9

Around what temperature of EGT's is considered extremely high?

i know our direct injection motors run much higher EGT's than traditional port injected cars. i don't know the range where it becomes too high, however. i'll have to research that and i'll update this thread with what i find