Our customer Thaine has been an avid road racer since he started coming into the shop year before last. His 05 RS has been build deliberately staged so that each time he takes out he can see the differences and if the changes are helping or hurting.

Last year the car on his normal torco/92 mix for the track put out high 320s on the stock cams. A set of S1s yielded a grand total of 366 at 26psi (his max for road racing). This off season, Thaine wanted to mix it up so he added a Red, ID1000s, ported the exhaust manifold, and switched to SD.

With the new found injector I was able to keep the car a little richer for those 20 min lap sessions and to stave off heatsoak induced knock. Here are the results-





and the logs-

 

Can I just say its awesome you've been including logs with these plots you post lately? Way awesome. 14° of timing @7000 seems a bit high for a RR car tho? I haven't fully tuned my car on SD yet though so mebbe I should try and run that much up there...currently 11,12's.

Thx for sharing, good power for good basic mods!

 

Believe it or not it needed that to smooth the powerband. I would like to run more but because we arent sure where the heatsoak is at right now we want to keep the timing a little lower (and I know its straight 92 safe at that boost level) since it still makes the power. Obviously this isnt pushing it as I could lean it out and pick up some power. Since this is a circuit car though I want it to stay happy. Thaine will do 4-5 sessions a lap day, the car needs to be reliable and consistent and chase down a 300whp turbo Lotus I like including the logs, makes it easier for people to see I am not smoke and mirrors and this is really what it takes with everything else the way it is. Hopefully Thaine will jump in later today with his full mod list since there are some pieces I dont know/cant remember.

 

Is he running Torco and 92 still?

If so how do you like the Torco. I just got a case of it and have been waiting for the temps to increase in cali before I tune the car on it.

 

For track days he is running a quart of Torco to his fuel load, if he sees a knocklight after 15 minutes when he pits he adds another pint. We are hoping that at the same boost level and being richer it should be fine on just a quart per tank. We have been talking about E85 to bring the EGTs down even further (and more power) but because it requires ALOT of fuel for 100 minutes worth of track days he is going to wait and get a trailer and then tow the car and fuel. Least that was the idea yesterday but it might wait depending on how this turns out at the next track day. If it really seems to be okay I am thinking it will stay on gas.

aaron

 

Full list of mods? I only see:

- S1's
- FP Red
- ID 1000's
- Ported exhaust mani
- Speed Density

I partly ask because this is the route I intend to go, only with a BBK or BBK-B instead of a Red.

 

The only other things I can think of that I know for sure-

AMS intercooler (3.5" I believe)
Omnipower 4bar
3" TBE (works?)
TiTek O2 housing
Perrin UCIP boost tube and intake (modded coupler for SD)
Hallman in cab MBC
Tune obviously

As I posted earlier I do not know his full mod list so I was waiting for him to post the rest.

 

I go through a FULL tank and 10-15 gallons from cans on a typical track day on E85.

Is this a Portland car?

 

Yeah, Red 05 RS with IX wheels.

 

4g64/fpblack combination!

John-

 

That would do it. We are thinking aerodynamics, 2.2, S2s, and E85

 

nice! That should do the trick! pesky lotus drivers!

I need to find the time to bring my EVO back down for round 2 of tuning, the car is coming up on 3000 miles now, time to get serious!

John-

 

Haha, I've yet to find a Lotus that gives me a problem.

 

FWIW, it is turning 1'22.9 laps around PIR as was this car at 360whp.

 

Hi all. My current mods are in the signature. Props to Aaron for tuning then posting the info on EVOm for me. Based on the tune and dyno data, I'm pretty sure I can run this on straight pump 92 at my next track day however I will bring Torco and 5 gallons of MS100 race gas just to be sure.

We went from 366 peak WHP to 413 peak WHP but I'm looking forward to having 75 more ponies when I shift at 7500. The combination of 1000cc injectors, FP-red, Speed density, and Aaron's skill have the car at 400+ through the power band.

Lots of people run the FP-red and S2 cams. I stayed with the S1s for comparison purposes and analysis. Portland is mostly short track between corners. Having power down low is important. After another driving season, I may want more top end. If that happens, next upgrade may likely be S2 cams, higher RPMs, and head/valve work (which leads to balance shaft delete, full lower build, E85, etc)