I've been in touch with Eurotoys as I believe that the time has come for me to get some serious performance out of my car. Here is what they wrote back and recommend....

Hello Marc,

I apologize for the delay. There are a few different ways to go, that is for sure. I would recommend these parts in this order;

-K&N air filter & Low Temp T/stat ($86.90 + shipping)
-Supercharger S-Porting & 2.5 pulley ($945 + shipping, add $575 if S/C needs rebuild). This involves you sending us your s/c, we do not have a core unit for that car.
-ECU Tuning ($995.00 + shipping)
-Milltek Cat Back Non Resonated Exhaust (1999.00 + shipping, add $150.00 for Resonated, add $1900.00 for High Flow Cats).
-Remaining Multi-piece pulley kit ($1250.00 + shipping). This kit is built to order.
-Water/Methanol Injection Kit (approximately $500). We will have to make this kit for you.

All of this should get the car just over 500hp, if you need more after that you will have to look into having us make a Twin-Screw supercharger kit and/or go into the engine for cylinder head work. Let me know if you have any more questions?

Thank you,

Mike
Eurotoys Ltd.

 

I double dare you..

 

Nice recommendations.

 

Thats BIGTIME....will be immensely jealous

 

Would also ask how much rwhp you get, who knows what % drive train loss is calculated here. A reference dyno chart would also be in place here considering the price of about $8000 without fitting.

Best advice I can give is to do a before dyno, than you will know your base line, and also if the car is in tip top shape (essential imho before starting any tuning)!

Then maybe also ask what sort of discount you get per hp his figures are off, and as incentive pay extra if you get above ;-).

Good luck, and keep us informed.

Andre.

 

Agreed Andre. I plan a baseline and then doing it piece by piece.

I will do the following first:

- K&N air filter & Low Temp T/stat
- Supercharger S-Porting & 2.5 pulley
- ECU Tuning

 

Awesome.

 

That thing will screeeeeeeaaaaammmmmmmm!!!

 

I have a new 2010 Jeep Liberty which has become the daily driver. Now that the Jag will be locked up in the garage, I can strip off some parts and get the baby ready to do as Bull says....SCREAM! I may even get work done on the tranny and the heads to see if I can't get it over 500HP.....really **** off the AMG and M guys....hehehehe

 

What year is your STR?
Thanks.

 

If he is talking 500 WHP, there is no way :/

I would skip the K&N. Lets in more dirt, that's about all they do.

I'm wanting to do some work on mine, but I'm a little leary as Eurotoys doesn't go into much detail and I have yet to see anybody do anything with their stuff except the upper blower pulley.

I'd be REALLY interested in what they could do with the other pulleys to gain the numbers they quote on their website. I think they say around 50hp gain with their full pulley kit. HOW? A lightened crank pulley maybe good for 5-8 hp, say on a good day that the 2.5psi blower pulley can give you 25hp, that leaves a lot of missing ponies..

 

I totaly agree. Proof has to be out there with a customer base and shown.

 

Here's why not to use a K&N filter without measurements and other changes first:
www.autospeed.com/cms/A_2232/article.html

 

Can only partly agree. I fully agree that you would need to use the pressure drop to measure a difference, especially when one uses different filters types/pipes that alter the airflow over the MAF, as then the MAF reading isn’t reliable. When sticking to the stock setup of a car then I might also agree that it is not worthwhile but you will only know for sure for a specific car if it has been measured. For modified cars it does make a difference.

 

I wouldn't use a K&N filter even if you paid me $1000. Same thing with other similar filters as the K&N. They wear out your engine by letting in a lot of dirt. If you hold up a K&N filter to the light, especially a slightly used one, you can see small holes where the light comes through.

 

It may make a difference on some, yes. Hardly ever just using a drop in filter though. What it does well is let in more dirt.

Saying it only works on modified cars is overgeneralizing. That's like saying it makes no difference on stock engines, such as a Honda 1.6 and a Jaguar supercharged 4.2. They just don't make a difference on those kinds of cars

 

@SteveM
This thread is about modifying the engine for more performance which usually doesn’t extend the life of the engine. If longivity is your prime concern instead of maximum performance I would suggest de-tuning a car or at least adapt your driving style.

@Mplex2000
That is not what I said at all, this is what you draw as a conclusion, let me quote again:
“When sticking to the stock setup of a car then I might also agree that it is not worthwhile but you will only know for sure for a specific car if it has been measured. For modified cars it does make a difference”

I say here that it MIGHT work on stock cars, but it has to be measured as every car is designed differently so you can’t come with a generic answer.

Next I say that for modified cars it does make a difference as here you go outside of the specifications a stock filter system was designed for. So far the measurements I have done on different Jaguars have proven this without any doubt.

 

Longevity is not my concern. Thant's you jumping to conclusions. If it was my primary concern, I wouldn't be modifying my car and going to the dragstrip. But I wouldn't purposely lower my longevity by using a sieve for a filter. You can use a much better filter that actually does its job, just get one large enough to flow the necessary CFM.

 

@SteveM,

Didn't recommend a specific filter, though I do not believe that a K&N filter would drasticaly reduce engine longivity, I would suspect that the modifications will do their work before that happens. I did measure my oil regulary and the cylicon particles didn't increase when I used the K&N.

"just get one large enough to flow the necessary CFM"
Couldn't agree more.

 

The lower pulley is not lightened it is bigger in diameter to increase the boost. You are limited on the upper pulley on how small you can go. Belt slip becomes a major problem. That leads to modifying the tensioner to increase belt wrap or how much of the pulley is contacting the belt. Changing the upper pulley to a smaller one and the lower pulley to a larger one will both increase boost. The stock lower pulley is in very tight quarters and usually to increase its diameter requires modifying the oil filter housing at least.
.
.
.