1) Is fueling an issue to make 830whp?
No, stock fuel pumps are more than capable here on pump/race gas. Stock injectors will need to be upgraded around 750rwhp.
2) How about cooling?
Other than a failed waterpump, I have not had any cooling issues. Although, I have been running methanol injection for years. Wouldn't say that is a must though, just helps drop the IATs.
3) Who did the tune for you for the new turbos?
4) Not sure if you’ve posted elsewhere about it, but why did you remove them after just 100 miles?
Mainly do drag racing and 1/2 mile events, so I am after peak hp. These turbos maxed out at 832rwhp and I am after more...
5) what other supporting mods did you find you needed?
The normal stuff, intake, exhaust, etc. The most important part is finding a capable tuner. I can help with that
6) I only do road race events so 20-30min stints at high RPM (not drag racing), so not sure how well the rest of the engine handles this. A lot of wide open throttle corner to corner. Any insights here?
Yes, I have some thoughts here. I do not think it is as bad as you think since the car was designed for road racing, baffled oil tank, dry sump system, finger follower valvetrain. I think the biggest concern would be around heat soak, which the blankets will help a lot with. There are a few more tips and tricks I can share with whoever ends of buying this setup.
Keep in mind this was just showing the max hp, you can run the same level of boost now and still make a lot more hp since these are larger turbos.
Most tunes on stock turbos only get to about 700-710 crank power (about 600whp), so jumping to 830whp means about 975 crank hp! Can you confirm we’re talking wheel or crank power? I’m concerned that 44% increase in power over a 675LT - or 73% over a 570! - must need supporting mods in terms of fuel, cooling and more.
Yep, that is not a typeo these turbos made over 832hp/ 710 tq to the wheels; I estimated it to be around 930rwhp at the crank. Did you see the dyno video above? Here is the dyno thead:
Since I am at this power level, I know for a fact what is and is not needed to reach these numbers
However, if we’re talking crank power, then that sounds more doable (it’s just that you mentioned “rwhp” in your post). I think HCD can give you around 827 without changing fueling, so should be realistic.
No, once again, I stated this directly and I do not exaggerate and have evidence
of the numbers. These turbos made 832hp to the wheels! Period
. I know what others claim to provide, but do they hand you a dyno sheet? I can and have... If they have similar hp or more, do they have the 1/2 mile record and VBox data to back it up, I can and have.
Lets just say, I walk the walk and others talk the talk...
PM me if you want to move forward here