just got my new race ecu and srt intake installed. a few observations for the member considering the purchase....

1. the upgrade is loud compared to stock. my car now sounds very similar to a mustang GT. it is quiet until you floor it and then, they can hear you blocks away. i like it, at least for now.

2. going to give my ecu a chance to learn, so performance observations will come in a few days. right now, the car runs quite similarly as before the upgrade. it just sounds faster.

 

Did you reset the engine ECU? (Fuse pull or disconnect battery)

 

that is weird, as soon as i put the intake and the chip in, the car performance change right the way, you can't miss it.

I am currently running RMM intake and SRT chip, as soon as I plug the chip it (I made a bypass connect to so I can by pass SRT chip anytime I want too, to verify my gain), I feel the different, no question about it.

something is not right or you lost your sense of touch hee hee.
the change is very sudden, especially 2-3rd

just put in TM, the can feel the throttle is very happy,rpm raise up quickly. (BTW, my Air fuel meter showed richer mixture, that is weird, I thought it would be leaner) in anycase, in contrary to the popular believe, you don't need to wait for the car to relearn, under acceleration, the car IS running in Open loop mode (ie ECU adjust fuel base on pre-map fuel curve, O2 reading and MAP signal) if should see the change right the way

Anh

 

i having a couple chances today to floor it, i did notice increased torque, especially in higher rpms...the car is sportier, no doubt about it.

 

Liazon,

When you want a quiter setup.... i have a perfect solution for you.......

 

as i get a chance to explore the new torqe range, i am very much impressed w/ the increased performance of the car. as others have said, it doesn't help much off the line, but in higher rmps, i definetly notice the difference. for the money involved, i shoud! but, i must say, i recommned the upgrade. it's ez to install and given you don't mind a louder engine, it's a great way to add some 'umph' to the gs. (some more umph i guess!)

 

Does SRT have a chip for the 300? Can the same results be expected on a 300?

 

Does the solution take away from performance, because I did read somewhere on CL that with the top of a custom cold air box on, it made the car feel a little slower then with it off.

ShOwGS

 

ShowGSLuVv,

Hummm.....that is a very interesting observation. I cannot say how the full enclosure will affect the performance since no dyno was ever done on my enclosure. I would be interested to see those posts if you know where they are. I know people have questioned the concept of the full enclosure just as you have stated. However, if you look at the current heat shield design, the hood insulation material is almost right on top the filter. There is a very small gap between the hood insulation and the filter already. It is hard to imagine the air volume difference. Personally, I wouldn't want that gap to be there due to the heat rises theory. All the hot engine air is trapped right around that area assuming the stock fan units cannot efficiently remove the heat from there.

To effectively reduce noise and temp, sheet metal itself will not do the job. Sheet metal conduct heat as RacingAristro had pointed out. It needs a medium to insulate the heat and the noise. Closed cell foams has a good material property for these tasks. This is why I have included the foams with my custom enclosure.

However, a few members already have a similar setup such as GARNET92 and BannanaGS (they have a different custome box), I don't recall if I hear any problem from them. I will ask them to post their opinion. I also believe that GARNET92 had done dyno on his car with the full enclosure and with some sort of foam insulation as well.

 

Banana, I got a question I've been meaning to ask you.... Mo said I couldn't use his race ECu with my Weapon-R intake. Could I use it??? Or I can't, and he wasn't trying to make more money off me???

 

ShowGSLuVv – I can understand your concern about “fully enclosing” the SRT intake filter. It’s a valid question.

I can offer two different confirmations that there is ample available airflow with a CAB. I modified a Weapon R cold air box to fit my SRT intake. I also insulated it to reduce the (objectionable to me) noise. It is very similar to KJ’s CAB.

1. Actual measurements. The “half oval” air intake for the stock unit measures 11.5” long and 1.75” high at its highest point. So that’s somewhat less than 20.125 sq. ins. A triangle-shaped opening behind/beneath the headlight is open to outside air when you remove the stock airbox, part of which would come from the lower grille area. I made some approximate measurements (as best as I could get a tape measure in there) and got 8” x 8” in a pyramid (triangle) shape. And if my calculations don’t fail me, that yields 32 sq. ins. So, there is MORE airflow available and the air box itself is larger than any part of the stock assembly. Additionally, there are several other incidental openings that I didn't include. So, I wouldn't worry about reducing airflow.

2. My own subjective opinions.
I noticed no negative effect on performance. The car dyno’d more than any other GS with similar equipment at a recent CL meet. And it really GROWLS now – the sound has changed from NOISE to an aggressive growl and sounds fantastic.

I’ve talked to KJ about his box and if I hadn’t already spent the time and money for what I’ve got – I’d get his – you can’t do it yourself (like I did) for less.