2007 Lotus Exige S

[asshanson]

Very nice. What are you expecting for it to put down power wise? What kind of dyno?

I really want a ride in this somehow! Maybe this summer when we are down in Iowa?

I will be disappointed with less than 280whp, I would really like to see 300.
You can for sure get a ride/drive this summer when you are here.

Not sure on the dyno, but it's load based I know.

[asshanson]

304whp peak when cool, 295whp when the intercooler was warm. Tq is in the 190 lb-ft range and very flat from 5000-8500rpm, I'm working on getting the graphs to post. Basically makes no power below 4k rpms then just screams up top, even wants to keep going way past 100mph which I wasn't expecting with the 1.8l.

The car was running stupid lean, over 13:1 on the old tune, it's a good thing I decided to get retuned after these mods. Car feels much more responsive now on tip in, and I am finally feeling traction control kick in for the first time. I didn't know what was happening at the autox today, thought it was stuttering on corner exit and the tuner told me to turn off TC next time.

After the entire day of autox (about 16-17 miles of track) I noticed my brake light came on which indicates brake fluid isn't completely full, and I saw some fluid around the front bleeders. Also I was having some trouble downshifting, like I was getting locked out, so I might have a leak in both the front calipers and the clutch slave. I may have overtightened them, or the previous owner did, they were nearly impossible to get loose when I flushed the system last week.

But the good news is I got best time of the day, and I kept getting a little bit faster as the day went on. My last lap I had a few really good turns in the fast sections but sloppy elsewhere, and it was still my best time by a half second. The car pushes a little bit so I'm going to adjust my front swaybar one notch stiffer and see how that goes.

For those of you who know Marshalltown, my best time was 1:22.06 for two laps, hoping I can get that into the sub-1:20 range with more practice and temps over 50* for some more traction.

[goodhart]

Congrats on time of the day!

[scheides]

Got dyno plots yet? What kind of dyno was this on?

Nice to hear the car is running good! Maybe a bunch of air still in the brake lines after your rebuild project?

[turbotalon1g]

Nice to hear. That is sick power to weight.
I just bought a motive power bleeder ill let you know how it works out incase you were looking to get one.

Congrats on the power, I have a feeling the powerband is sick.

[evotuner]

Nice to hear. That is sick power to weight.
I just bought a motive power bleeder ill let you know how it works out incase you were looking to get one.

Congrats on the power, I have a feeling the powerband is sick.

I have one and its pretty sweet, but I still don't mind having a buddy work the brakes though

[BriK]

The car pushes a little bit so I'm going to adjust my front swaybar one notch stiffer and see how that goes.


Most people would advise going the opposite direction-- softening the front swaybar to reduce understeer. Plenty of articles and resources on this so I won't get all techy here but, most simply, increasing the stiffness of a sway bar at one end of the car often has the most effect at the other end due to the bar's effect on lateral load transfer.

[asshanson]

Yea that is what I meant, I was thinking about this last night and realized I had it backwards haha. Thanks for confirming.

Or I could just add negative camber to the front tires and just get more grip up front. I have to get an alignment soon anyway after I install my toe links.

[BriK]

Or I could just add negative camber to the front tires and just get more grip up front. I have to get an alignment soon anyway after I install my toe links.

I think that's a better route. You could also consider a spacer, even a very small one. I'm playing with a 3mm spacer up front to widen the front track a little without hugely effecting scrub radius.

[simulatedwood]

Push is a funny thing, You could try a softer spring setup or try adding camber, it really depends is this a high speed or low speed push? Also what are the condition of the tires? Tires is usually 80 percent of all issues. Suspension setup accounts for the other 20 percent as a rule.